C program to perform basic arithmetic operations of addition, subtraction, multiplication, and division of two numbers/integers that user inputs.

## Division in C

In C language, when we divide two integers, we get an integer result, e.g., 5/2 evaluates to 2.

As a general rule integer/integer = integer, float/integer = float and 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 program for arithmetic operations

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, you can also write: divide = (float)first/second

printf("Sum = %d\n", add);

printf("Difference = %d\n", subtract);

printf("Multiplication = %d\n", multiply);

printf("Division = %.2f\n", divide); // "%.2lf" to print two decimal digits, by default (%lf) we get six

return 0;

}

Output of program:

Download Arithmetic operations program.

If we calculate 13/5 in a C program, the result is 2, so you might be thinking how can I get the remainder. To get it, use the modulus operator (%), yes it's a percentage sign.

The value of n is 3 (The remainder we obtain when 13 is divided by 5).