DAFFODIL INTERNATIONAL UNIVERSITY
Lab Report – CSE -122L/CS-116 (Structured Programming Lab)
Teacher – Ahmed Shamsul Arefin, Senior Lecturer, CSE & CIS.
E-mail: asarefin(at th rt)yahoo.com
Submission Date: The 5th August, 2008.
// Print “Hello World”
//Program Code:
#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
printf(”Hello World”);
}
Output
Hello World
Conclusion:
• To compile the written program Press Ctrl+F9.
• To view the program output Press Alt+F5.
// Addition of five numbers.
//Program Code:
#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int a,b,c,d,e,sum;
printf(”Enter five numbers:\n”);
scanf(”%d%d%d%d%d”,&a,&b,&c,&d,&e);
sum=a+b+c+d+e;
printf(”Addition of %d+%d+%d+%d+%d=%d”,a,b,c,d,e,sum);
}
Input Output
Enter five numbers:
10
11
12
13
14
Addition of 10+11+12+13+14=60
Conclusion:
• To compile the written program Press Ctrl+F9.
• To view the program output Press Alt+F5.
//Checking a number odd or even
//Program Code:
#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int n;
printf(”Insert a number:”);
scanf(”%d”,&n);
if(n%2==0)
printf(”This is Even number”);
else printf(”This is Odd number”);
}
Input Output
Insert a number: 25 This is Odd number
Insert a number: 20 This is Even number
Conclusion:
• To compile the written program Press Ctrl+F9.
• To view the program output Press Alt+F5.
// Example of Trigonometry [X=y sin (t) +z cos (t)]
//Program Code
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float x,y,z,t,t1;
clrscr();
printf(”Enter a value for y:”);
scanf(”%f”,&y);
printf(”Enter a value for z:”);
scanf(”%f”,&z);
printf(”Enter a value for (angle) t:”);
scanf(”%f”,&t);
t1=t*M_PI/180.0;
x=y*sin(t1)+z*cos(t1);
printf(”\nThe result of x is: %f”,x);
getch();
}
Input Output
Enter a value for y:1
Enter a value for z:1
Enter a value for (angle) t: 0 The result of x is: 1.000000
Enter a value for y:1
Enter a value for z:1
Enter a value for (angle) t:90 The result of x is: 1.000000
Enter a value for y:1
Enter a value for z:1
Enter a value for (angle) t:30 The result of x is: 1.366025
Enter a value for y:1
Enter a value for z:1
Enter a value for (angle) t:60 The result of x is: 1.366025
Enter a value for y:b
Enter a value for z:1
Enter a value for (angle) t:45 The result of x is: 1.414214
//Example of Algebra (Quadratic equation)
//Program Code
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float a,b,c,x1,x2;
clrscr();
printf(”Enter a value for b:”);
scanf(”%f”,&b);
printf(”Enter a value for a:”);
scanf(”%f”,&a);
printf(”Enter a value for c:”);
scanf(”%f”,&c);
x1=(-b+(sqrt(b*b-4*a*c)))/2.0*a;
x2=(-b-(sqrt(b*b-4*a*c)))/2.0*a;
printf(”X1:%f\n”,x1);
printf(”X2:%f\n”,x2);
getch();
}
Input Output
Enter a value for b:9
Enter a value for a:1
Enter a value for c:2 X1: -0.227998
X2: -8.772002
Enter a value for b:12
Enter a value for a:1
Enter a value for c:3 X1: -0.255437
X2: -11.744563
Enter a value for b:10
Enter a value for a:5
Enter a value for c:6 sqrt: DOMAIN error
sqrt: DOMAIN error
X1: +NAN
X2: +NAN
//Example of algebra[x=√ (2a+2b) (2a+2b)/2c
//Program Code:
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float a,b,c,x;
clrscr();
printf("Enter a number for a:");
scanf("%f",&a);
printf("Enter a number for b:");
scanf("%f",&b);
printf("Enter a number for c:");
scanf("%f",&c);
x=sqrt(((2*a+2*b)*(2*a+2*b))/2*c);
printf("\nx:%f\n",x);
getch();
}
Input Output
Enter a number for a: 4
Enter a number for b: 3
Enter a number for c: 2
x: 14.000000
Enter a number for a: 25
Enter a number for b: 10
Enter a number for c: 5
x: 110.679718
//Geometry problem-1
//Find the shaded area of a square?
//Program Code
#include <stdio.h>
#include <conio.h>
#include <math.h>
void main()
{
float r,A;
clrscr();
printf("Enter a value for radius(r):");
scanf("%f",&r);
A=4*r*r-M_PI*r*r;
printf("\n A:%f",A);
getch();
}
Input Output
Enter a value for radius(r):3
A= 7.725666
Enter a value for radius(r):5
A= 21.460184
Enter a value for radius(r):6
A= 30.902664
//Geometry problem-2
//Find the shaded area of a triangle
//Program Code
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float b,h,r,A;
clrscr();
printf("Enter a value for base(b):");
scanf("%f",&b);
printf("Enter a value for hight(h):");
scanf("%f",&h);
printf("Enter a value for radius(r):");
scanf("%f",&r);
A=1/2*b*h-M_PI*r*r;
printf("\n A:%f",A);
getch();
}
Input Output
Enter a value for base(b):9
Enter a value for hight(h):6
Enter a value for radius(r):2
A: -12.566371
Enter a value for base(b):10
Enter a value for hight(h):25
Enter a value for radius(r):3
A: -28.274334
Enter a value for base(b):20
Enter a value for hight(h):30
Enter a value for radius(r):7
A: -153.938034
//Geometry problem-3
//Program Code
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float r,a,A;
clrscr();
printf("Enter a value for a:");
scanf("%f",&a);
printf("Enter a value for radius(r):");
scanf("%f",&r);
A=a*a*a-(4.0/3.0)*M_PI*pow(r,3);
printf("\n A:%f",A);
getch();
}
Input Output
Enter a value for a: 4
Enter a value for radius(r): 2 A: 30.489677
Enter a value for a:6
Enter a value for radius(r): 2 A: 182.489685
Enter a value for a:25
Enter a value for radius(r): 10 A: 11436.209961
//Example of Increment and Decrement
//Program Code:
#include <stdio.h>
#include <conio.h>
void main()
{
int a,b,c,d,e;
clrscr();
printf("Enter a number(a):");
scanf("%d",&a);
b=++a;
printf("\nThe result of b (b=++a) is:%d\n",b);
printf("\nAfter (++a) a is:%d\n",a);
c=a++;
printf("\nThe result of c (c=a++) is:%d\n",c);
printf("\nAfter (a++) a is:%d\n",a);
d=--a;
printf("\nThe result of d (d=--a) is:%d\n",d);
printf("\nAfter (--a) a is:%d\n",a);
e=a--;
printf("\nThe result of e (e=a--) is:%d\n",e);
printf("\nAfter (a--) a is:%d\n",a);
getch();
}
Input Output
Enter a number (a):10 The result of b (b=++a) is:11
After (++a) a is:11
The result of c (c=a++) is:11
After (a++) a is:12
The result of d (d=--a) is:11
After (--a) is:11
The result of e (e=a--)is:11
After (a--) a is:10
// Find the area of a circle
// Program Code:
#include <stdio.h>
#include <conio.h>
#include <math.h>
void main()
{
float r,a;
clrscr();
printf("Enter a value for r (radius):");
scanf("%f",&r);
a=M_PI*r*r;
printf("Area of a circle is:%f",a);
getch();
}
Input Output
Enter a value for r (radius):3 Area of a circle is:28.274334
Enter a value for r (radius):4 Area of a circle is:50.265484
Enter a value for r (radius):6 Area of a circle is:113.097336
//Demonstration of strcpy()function
//Program Code:
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
{
char x1[20],x2[20];
clrscr();
printf(”\nEnter a string(x1):”);
scanf(”%s”,&x1);
printf(”\nEnter a string(x2):”);
scanf(”%s”,&x2);
strcpy(x1,x2);
printf(”\nx1:%s”,x1);
getch();
}
Input Output
Enter a string(x1): Saiful
Enter a string(x1): Islam
X1: Islam
//Demonstration of strcmp() function
//Program Code:
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
{
char s1[25];
char s2[25];
clrscr();
start: printf(”\nEnter string:”);
scanf(”%s”,&s1);
printf(”\nEnter string:”);
scanf(”%s”,&s2);
if(strcmp(s1,s2)==0)
printf(”\nMatched”);
else
{
printf(”\nNot Match\n”);
goto start;
}
getch();
}
Input Output
Enter string: saiful
Enter string: islam
Enter string: saiful
Enter string: saiful Not Matched
Matched
//Demonstration of strcat() and strlen() function
//Programe Code:
#include<stdio.h>
#include<string.h>
#include<conio.h>
void main()
{
char x1[25];
char x2[25];
clrscr();
printf(”\nEnter any string:”);
scanf(”%s”,&x1);
printf(”\nEnter any string:”);
scanf(”%s”,&x2);
int n1=strlen(x1);
int n2=strlen(x2);
strcat(x1,x2);
printf(”\n\n String length (x1): %d”,n1);
printf(”\n\n String length (x2) :%d”,n2);
printf(”\n\n Concatenation of (x1+x2) is:%s”,x1);
getch();
}
Input Output
Enter any string: Saiful
Enter any string: Islam
String length (x1): 6
String length (x2): 5
Concatenation of (x1+x2) is: SaifulIslam
//Conversion of Decimal to Roman number
//Program Code:
#include<stdio.h>
#include<conio.h>
void main()
{
int n;
clrscr();
printf(”Enter a decimal number:”);
scanf(”%d”,&n);
switch(n)
{
case 1:
printf(”\n The equivalent roman number is:I “);
break;
case 2:
printf(”\n The equivalent roman number is:II “);
break;
case 3:
printf(”\n The equivalent roman number is:III “);
break;
case 4:
printf(”\n The equivalent roman number is:IV “);
break;
case 5:
printf(”\n The equivalent roman number is:V”);
break;
case 6:
printf(”\n The equivalent roman number is:VI “);
break;
case 7:
printf(”\n The equivalent roman number is:VII “);
break;
case 8:
printf(”\n The equivalent roman number is:VIII “);
break;
case 9:
printf(”\n The equivalent roman number is:IX “);
break;
case 10:
printf(”\n The equivalent roman number is:X “);
break;
default:
printf(”Out of range”);
}
getch();
}
Input Output
Enter a decimal number: 1 The equivalent roman number is: I
Enter a decimal number: 2 The equivalent roman number is: II
Enter a decimal number: 3 The equivalent roman number is: III
Enter a decimal number: 4 The equivalent roman number is: IV
Enter a decimal number: 5 The equivalent roman number is: V
Enter a decimal number: 6 The equivalent roman number is: VI
Enter a decimal number: 7 The equivalent roman number is: VII
Enter a decimal number: 8 The equivalent roman number is: VIII
Enter a decimal number: 9 The equivalent roman number is: IX
Enter a decimal number: 10 The equivalent roman number is: X
Enter a decimal number: 11 Out of range
//Demonstration of itoa()function(integer to string)
//Program Code:
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
void main()
{
int number;
char string[25],*n,*m,*p,*q;
clrscr();
start: printf(”Enter any integer:=”);
scanf(”%d”,&number);
n= itoa(number, string,2);
printf(” \n(binary string)=%s”,n);
m= itoa(number, string,8);
printf(” \n m(octal string)=%s”,m);
p= itoa(number, string,16);
printf(” \n p(hexadecimal string)=%s”,p);
q= itoa(number, string,10);
printf(” \n q(decimal string)=%s”,q);
getch();
}
Input Output
Enter any integer:=12 n(binary string)=1100
m(octal string)=14
p(hexadecimal string)=c
q(decimal string)=12
Enter any integer:=15 n(binary string)=1111
m(octal string)=17
p(hexadecimal string)=f
q(decimal string)=15
//Demonstration of atio()function(string to integer)
Porgram Code:
#include <stdlib.h>
#include <stdio.h>
#include<conio.h>
void main()
{
int n;
char str[25];
clrscr();
printf(” Enter any string:= “);
scanf(”%s”,&str);
n = atoi(str);
printf(”Equivalent Integer = %d\n”,n);
getch();
}
Input Output
Enter any string:= 99.999 Equivalent Integer = 99
Enter any string:= 120.456 Equivalent Integer = 120
// Conversion of roman to decimal
//Program Code:
#include<string.h>
#include<stdio.h>
#include<conio.h>
void main()
{
char r[25];
clrscr();
printf(”Enter roman number:=”);
scanf(”%s”,&r);
if(strcmp(r,”I”)==0)
printf(”The decimal value is:=1″);
else if(strcmp(r,”II”)==0)
printf(”The decimal value is:=2″);
else if(strcmp(r,”III”)==0)
printf(”The decimal value is:=3″);
else if(strcmp(r,”IV”)==0)
printf(”The decimal value is:=4″);
else if(strcmp(r,”V”)==0)
printf(”The decimal value is:=5″);
else if(strcmp(r,”VI”)==0)
printf(”The decimal value is:=6″);
else if(strcmp(r,”VII”)==0)
printf(”The decimal value is:=7″);
else if(strcmp(r,”VIII”)==0)
printf(”The decimal value is:=8″);
else if(strcmp(r,”IX”)==0)
printf(”The decimal value is:=9″);
else if(strcmp(r,”X”)==0)
printf(”The decimal value is:=10″);
else
printf(”Out of range”);
getch();
}
Input Output
Enter roman number: X The decimal value is: 10
Enter roman number: V The decimal value is: 5
Enter roman number: III The decimal value is: 3
Enter roman number: XIV Out of range
//Series summation (n number) using for loop
//Program Code:
#include <stdio.h>
#include <conio.h>
void main()
{
int i,n,sum=0;
clrscr();
printf(”Enter the range:”);
scanf(”%d”,&n);
for(i=1;i<=n;i++)
sum=sum+i;
printf(”The sum is:%d”,sum);
getch();
}
Input Output
Enter the range: 10 The sum is: 55
Enter the range: 20 The sum is: 210
Enter the range: 100 The sum is: 5050
//summation of nth even number
//Program Code:
#include <stdio.h>
#include <conio.h>
void main()
{
int i,n,sum=0;
clrscr();
printf(”Enter the range:=”);
scanf(”%d”,&n);
for(i=2;i<=n;i=i+2)
sum=sum+i;
printf(”The sum is:=%d”,sum);
getch();
}
Input Output
Enter the range:=10 The sum is:=30
Enter the range:=20 The sum is:=110
//Summation of nth odd number
//Program Code:
#include <stdio.h>
#include <conio.h>
void main()
{
int i,n,sum=0;
clrscr();
printf(”Enter the range:=”);
scanf(”%d”,&n);
for(i=1;i<=n;i=i+2)
sum=sum+i;
printf(”The sum is:=%d”,sum);
getch();
}
Input Output
Enter the range:=10 The sum is:=25
Enter the range:=20 The sum is:=100
//Demonstration of Factorial number using function
//Program Code:
#include<stdio.h>
#include<conio.h>
long int factorial(int n)
{
int i;
long int f=1;
for(i=1;i<=n;i++)
{
f=f*i;
}
return f;
}
void main()
{
int n;
long int f;
clrscr();
printf(”Enter a number:”);
scanf(”%d”,&n);
f=factorial(n);
printf(”Factorial of the %d is:%ld”,n,f);
getch();
}
Input Output
Enter a number: 10 Factorial of the 10 is: 3628800
Enter a number: 12 Factorial of the 12 is: 479001600
Enter a number: 15 Factorial of the 15 is: 2004130016
//Demonstration of factorial number using recursive function
//Program Code:
#include<stdio.h>
#include<conio.h>
long int fac(int n)
{
if(n<=1)
return 1;
else
return (n*fac(n-1));
}
void main()
{
clrscr();
int n;
long int f;
printf(”Enter an integer number:”);
scanf(”%d”,&n);
f=fac(n);
printf(”Factorial number of %d is:%ld”,n,f);
getch();
}
Input Output
Enter an integer number: 6 Factorial number of 6 is: 720
Enter an integer number: 10 Factorial number of 10 is: 3628800
Enter an integer number: 12 Factorial number of 12 is: 479001600
//Demonstration of nCr using recursive function
//Program Code:
#include<stdio.h>
#include<conio.h>
long int factorial(int n){
int i;
long int f=1;
for(i=1;i<=n;i++){
f=f*i;
}
return f;
}
void main()
{
int n,r;
long int f;
clrscr();
printf(”Enter a number(n):”);
scanf(”%d”,&n);
printf(”Enter a number(r):”);
scanf(”%d”,&r);
f=factorial(n)/(factorial(n-r)*factorial(r));
printf(”Result:%ld”,f);
getch();
}
Input Output
Enter a number(n): 5
Enter a number(n): 2 Result: 10
//Demonstration of Quadratic Equation using function
//Program Code:
#include<stdio.h>
#include<conio.h>
#include<math.h>
float quadretic1(float a,float b,float c){
float x1;
x1=(-b+sqrt(b*b-4*a*c))/2.0*a;
return x1;}
float quadretic2(float a,float b,float c){
float x2;
x2=(-b-sqrt(b*b-4*a*c))/2.0*a;
return x2;}
void main()
{
float a,b,c,x1,x2;
clrscr();
printf(”Enter a value for (b):”);
scanf(”%f”,&b);
printf(”Enter a value for (a):”);
scanf(”%f”,&a);
printf(”Enter a value for (c):”);
scanf(”%f”,&c);
x1=quadretic1(a,b,c);
x2=quadretic2(a,b,c);
printf(”\nx1:%f”,x1);
printf(”\nx2:%f”,x2);
getch();
}
Input Output
Enter a value for b:9
Enter a value for a:1
Enter a value for c:2 X1: -0.227998
X2: -8.772002
Enter a value for b:12
Enter a value for a:1
Enter a value for c:3 X1: -0.255437
X2: -11.744563
Enter a value for b:10
Enter a value for a:5
Enter a value for c:6 sqrt: DOMAIN error
sqrt: DOMAIN error
X1: +NAN
X2: +NAN
//Demonstration of Fibonacci number using function
//Program Code:
#include<stdio.h>
#include<conio.h>
int fib(int n){
int a=1,b=1,c,i;
for(i=3;i<=n;i++)
{
c=a+b;
a=b;
b=c;
}
return c;
}
void main()
{
int n,f;
clrscr();
printf(”Enter a number:”);
scanf(”%d”,&n);
f=fib(n);
printf(”\nFibonacci number of %d is:%d”,n,f);
getch();
}
Input Output
Enter a number:12 Fibonacci number of 12 is: 144
Enter a number:13 Fibonacci number of 13 is: 233
Enter a number:19 Fibonacci number of 19 is: 4181
//Demonstration the summation of series using array
//Program Code:
#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int i,x[25],n,sum=0;
printf(”Enter a range of the series:”);
scanf(”%d”,&n);
printf(”Enter the values:\n”);
for(i=0;i<n;i++)
scanf(”%d”,&x[i]);
for(i=0;i<n;i++)
sum+=x[i];
printf(”The sum is:%d”,sum);
getch();
}
Input Output
Enter a range of the series: 5
Enter the values:
10
10
10
10
10 The sum is: 50
//Demonstration of passing array to function
//Program Code:
#include<stdio.h>
#include<conio.h>
int sum(int a[],int n)
{
int i,s=0;
for(i=1;i<=n;i++)
{
s=s+a[i];
}
return s;
}
void main()
{
clrscr();
int i,n,x[25];
printf(”Enter a range of the series:”);
printf(”Enter the values:\n”);
scanf(”%d”,&n);
printf(”Enter the values:\n”);
for(i=1;i<=n;i++)
{
scanf(”%d”,&x[i]);
}
printf(”The summation is:%d”,sum(x,n));
getch();
}
Input Output
Enter a range of the series: 5
Enter the values:
10
10
10
10
10 The sum is: 50
//Demonstration of Matrix addition
//Program Code:
#include<stdio.h>
#include<conio.h>
void matrix_addition(int x[10][10],int y[10][10],int n){
int i,j,c[10][10];
for(i=0;i<n;i++){
for(j=0;j<=n;j++){
c[i][j]=x[i][j]+y[i][j];}
}
printf(”Addition of two matrix is:\n\n”);
for(i=0;i<n;i++){
for(j=0;j<n;j++){
printf(”\t%d”,c[i][j]);}
printf(”\n”);}
}
void main()
{
clrscr();
int i,j,n,x[10][10],y[10][10],z[10][10];
printf(”Enter the range of squire matrix:”);
scanf(”%d”,&n);
printf(”Insert the entries for first matrix:\n\t”);
for(i=0;i<n;i++){
for(j=0;j<n;j++){
scanf(”%d”,&x[i][j]);}
}
printf(”Insert the entries for second matrix:\n\t”);
for(i=0;i<n;i++){
for(j=0;j<n;j++){
scanf(”%d”,&y[i][j]);}
}
matrix_addition(x,y,n);
getch();
}
Input Output
Enter the range of squire matrix: 3
Insert the entries for first matrix:
1 1 1
1 1 1
1 1 1
Insert the entries for second matrix:
2 2 2
2 2 2
2 2 2 Addition of two matrix is:
3 3 3
3 3 3
