Assignment operators are used to assign values to variables and perform operations simultaneously. Here are some commonly used assignment operators:
| Operator | Description | Example |
|---|---|---|
| = | Assigns the value on the right to the variable on the left. | x = 5; |
| += | Adds the value on the right to the variable on the left. | x += 3; |
| -= | Subtracts the value on the right from the variable on the left. | x -= 4; |
| *= | Multiplies the variable on the left by the value on the right. | x *= 2; |
| /= | Divides the variable on the left by the value on the right. | x /= 4; |
| %= | Takes the modulus of the variable on the left with the value on the right. | x %= 3; |
Here are some examples of how these assignment operators work in C:
int x = 5; // Assigns the value 5 to the variable x
x += 3; // Equivalent to x = x + 3, assigns 8 to x
x -= 4; // Equivalent to x = x - 4, assigns 4 to x
x *= 2; // Equivalent to x = x * 2, assigns 8 to x
x /= 4; // Equivalent to x = x / 4, assigns 2 to x
x %= 3; // Equivalent to x = x % 3, assigns 2 to x (remainder of 8 / 3)
#include <stdio.h>
int main() {
int x = 10;
x += 5;
printf("The value of x is %d\n", x);
return 0;
}
This program initializes an integer variable 'x' to 10 and then uses the '+=' assignment operator to add 5 to 'x'. The final value of 'x' is printed, which will be 15.
The value of x is 15
#include <stdio.h>
int main() {
int x = 5, result;
result = x;
printf("result = %d \n", result);
result += x; // result = result + x
printf("result = %d \n", result);
result -= x; // result = result - x
printf("result = %d \n", result);
result *= x; // result = result * x
printf("result = %d \n", result);
result /= x; // result = result / x
printf("result = %d \n", result);
result %= x; // result = result % x
printf("result = %d \n", result);
result = result << x; // result = result << x
printf("result = %d \n", result);
result >>= x; // result = result >> x
printf("result = %d \n", result);
result &= x; // result = result & x
printf("result = %d \n", result);
result ^= x; // result = result ^ x
printf("result = %d \n", result);
result |= x; // result = result | x
printf("result = %d \n", result);
return 0;
}
result = 5 result = 10 result = 5 result = 25 result = 5 result = 0 result = 0 result = 0 result = 0 result = 5 result = 5