C programming Question and Answer Day-1

1. Program to print "Hello World!!".

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
printf("Hello World!!");
getch();
}

2. Program to assign values of two numbers and print their addition.

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,ans;
clrscr();
a=10;
b=20;
ans=a+b;
printf("Addition is : %d",ans);
getch();
}

3. Program to accept values of two numbers and print their addition.

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,ans;
clrscr();
printf("Enter 1st number:");
scanf("%d",&a);
printf("Enter 2nd number:");
scanf("%d",&b);
ans=a+b;
printf("Addition is : %d",ans);
getch();
}

4. Program to print simple interest.

#include<stdio.h>
#include<conio.h>
void main()
{
float interest, p, r, n;
clrscr();
printf("Enter value of P: ");
scanf("%f",&p);
printf("Enter value of R: ");
scanf("%f",&r);
printf("Enter value of N: ");
scanf("%f",&n);
interest=p*r*n/100f;
printed("Simple Interest : %f", interest);
getch();
}

5. Program to accept value of radius and print area of a circle.

#include<stdio.h>
#include<conio.h>
void main()
{
float area,radius;
clrscr();
printf("Enter Radius:");
scanf("%f",&radius);
area=3.14*radius*radius;
printf("Area of the given radius is : %6.2f",area);
getch();
}