ARITHMETIC OPERATORS
The symbols of the arithmetic operators are:-

Operation Operator Comment Value of Sum before Value of sum after
Multiply * sum = sum * 2; 4 8
Divide / sum = sum / 2; 4 2
Addition + sum = sum + 2; 4 6
Subtraction - sum = sum -2; 4 2
Increment ++ ++sum; 4 5
Decrement -- --sum; 4 3
Modulus % sum = sum % 3; 4 1
The following code fragment adds the variables loop and count together, leaving the result in the variable sum
sum = loop + count;

Note: If the modulus % sign is needed to be displayed as part of a text string, use two, ie %%

#include <stdio.h>

main()
{
int sum = 50;
float modulus;

modulus = sum % 10;
printf("The %% of %d by 10 is %f\n", sum, modulus);
}

Sample Program Output
The % of 50 by 10 is 0.000000

CLASS EXERCISE C5
What does the following change do to the printed output of the previous program?

printf("The %% of %d by 10 is %.2f\n", sum, modulus);

#include <stdio.h>

main() {

int sum = 50;

float modulus;

modulus = sum % 10;

printf("The %% of %d by 10 is %.2f\n", sum, modulus); }

The % of 50 by 10 is 0.00