3rd program

Theory

“A variable is a space in the computer’s memory set aside for a certain kind of data and given a name for easy reference.”

Variables may be the most fundamentals aspect of any computer language. Variables are used so that the same space in memory can hold different values at different times. For instance, suppose you are writing a program to calculate someone’s paycheck, you will need to store at least the hourly rate and the hours worked. If you want to do the calculation for more than one employee, you will need to use the same program and the same spaces in memory to store similar data for additional employees. A variable is a space in memory that plays the same role many times, but may contain a different value each time.


Task:
1. Write a program that takes your age as input and calculate the total number of hours old?
#include<stdio.h>
void main(void)
{
int a,h;
printf("ENTER YOUR AGE ");
scanf("%d",&a);
h=8760*a;
printf("YOU ARE %d HOURS OLD\n",h);
}
2. Write a program that takes two integers as input, perform the following and print the result.
a + b , a – b , a * b , a / b

#include<stdio.h>
void main(void)
{
int p,o,i,t,u,j;
printf("ENTER 1st Integer\n");
scanf("%d",&i);
printf("ENTER 2nd Integer\n");
scanf("%d",&j);
p=i+j;
o=i-j;
t=i*j;
u=i/j;
printf("1st %d\n",p);
printf("2nd %d\n",o);
printf("3rd %d\n",t);
printf("4th %d\n",u);
}