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There are some advanced operators in C. First set of these operators is the Assignment Operators. Here are five operators presented in the arithmetic assignment operators:

• += (Plus Equals)
• -= (Minus Equals)
• *= (Multiply Equals)
• /= (Divide by Equals)
• %= (Modular Equals)

For example, x += y – 3 is the same as x = x + y – 3.

Other assignment operators that are not commonly used are:

• &&= (And Equals)
• ||= (Or Equals)
• &= (Bitwise And Equals)
• |= (Bitwise Or Equals)
• ^= (Bitwise Not Equals)
• >>= (Bitwise Shift Right Equals)
• <<= (Bitwise Shift Left Equals)

Here is the sample code for the arithmetic assignment operators:

/*
 *
 * assignment.c
 *
 * Program to demonstrate the use of assignment operators
 *
 * by Mark Virtue, 2001.
 *
 */

#include <stdio.h>

main() {
 int x, y;

 y = 3;
 x = 100;
 x /= y - 1;    // It's the same as x = x / (y - 1), therefore it can substitute to x = 100 / (3 - 1).

 printf("x = %dn", x);    // The answer is x = 50.

 fflush(stdin);
 getchar();
}