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C program to perform addition, subtraction, multiplication and division

C program to perform basic arithmetic operations which are addition, subtraction, multiplication, and division of two numbers. Numbers are assumed to be integers and will be entered by a user. In C language when we divide two integers we get an integer as a result, for example, 5/2 evaluates to 2. As a general rule integer/integer = integer and float/integer = float or integer/float = float. So we convert denominator to float in our program, you may also write float in the numerator. This explicit conversion is known as typecasting.

C programming code

#include <stdio.h>

int main()
   int first, second, add, subtract, multiply;
   float divide;
   printf("Enter two integers\n");
   scanf("%d%d", &first, &second);
   add = first + second;
   subtract = first - second;
   multiply = first * second;
   divide = first / (float)second;   //typecasting

   printf("Sum = %d\n", add);
   printf("Difference = %d\n", subtract);
   printf("Multiplication = %d\n", multiply);
   printf("Division = %.2f\n", divide);
   return 0;

Output of program:
Arithmetic operations C program

Download Arithmetic operations program.

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