In this lesson, you will learn about Assignment Operators in C, and their usage, along with examples to better understand the topic.
The assignment operator is the sign equal to =. However, it indicates that the left operand takes and allocates the value of the expression on the right operand. That is called value assigned. For Example, x = 14 is to assign the variable x the value 14.
The table below illustrates the Assignment Operators in C
| Assignment Operators Symbol | Explanation | Example |
|---|---|---|
| = | a = b + c will allocate the value of b + c into a | a = b + c |
| += | a += b is same to a = b + a | a+=b |
| -= | a -= b is same to a = a - b | a-=b |
| *= | a *= b is same to a = a * b | a*=b |
| /= | a /= b is same to a = a / b | a/=b |
| %= | a %= b is same to a = a % b | a%=b |
| .= | a .= b is same to a = a . b | a.=b |
| &= | a &= b is same to a = a & b | a&=b |
| |= | a |= b is same to a = a | b | a|=b |
| ^= | a ^= b is same to a = a ^ b | a^=b |
| <<= | a <<= b is same to a = a << b | a <<= b |
| >>= | a >>= b is same to a = a >> b | a >>= b |
#include <stdio.h>
int a, b, c;
int main() {
printf("C Assignment Operator Example");
printf("\n");
//Add and += operator adds right operand to the left operand and allocate the result to left operand
a = 84;
c = 0;
printf("a = %d \nc = %d\n", a, c);
c += a;
printf("Addition and operation-> +=\n");
printf("Expression -> c += a\n");
printf("value of a added to c and allocated to c\n");
printf("Result -> %d\n", c);
//Subtract and -= operator subtract right operand to the left operand and allocate the result to left operand
a = 3;
c = 83;
printf("a = %d \nc = %d\n", a, c);
c -= a;
printf("Subtract and operation-> -=\n");
printf("Expression -> c -= a\n");
printf("value of a subtracted to c and allocated to c\n");
printf("Result -> %d\n", c);
//Multiply and -= operator multiply right operand to the left operand and allocate the result to left operand
a = 11;
c = 3;
printf("a = %d \nc = %d\n", a, c);
c *= a;
printf("Multiply and operation-> -=\n");
printf("Expression -> c *= a\n");
printf("value of a multiplied to c and allocated to c\n");
printf("Result -> %d\n", c);
//Division and /= operator divide right operand to the left operand and allocate the result to left operand
a = 5;
c = 10;
printf("a = %d \nc = %d\n", a, c);
c /= a;
printf("Division and operation-> /=\n");
printf("Expression -> c /= a\n");
printf("value of a divided to c and allocated to c\n");
printf("Result -> %d\n", c);
//Modulus and %= operator modulus right operand to the left operand and allocate the result to left operand
a = 5;
c = 3;
printf("a = %d \nc = %d\n", a, c);
c %= a;
printf("Division and operation-> %=\n");
printf("Expression -> c %= a\n");
printf("value of a modulus to c and allocated to c\n");
printf("Result -> %d\n", c);
return 0;
}
Output
C Assignment Operator Example a = 84 c = 0 Addition and operation-> += Expression -> c += a value of a added to c and allocated to c Result -> 84 a = 3 c = 83 Subtract and operation-> -= Expression -> c -= a value of a subtracted to c and allocated to c Result -> 80 a = 11 c = 3 Multiply and operation-> *= Expression -> c *= a value of a multiplied to c and allocated to c Result -> 33 a = 5 c = 10 Division and operation-> /= Expression -> c /= a value of a divided to c and allocated to c Result -> 2 a = 5 c = 3 Modulus and operation-> %= Expression -> c %= a value of a modulus to c allocated to c Result -> 3
In the next lesson, you will learn in detail about the if statement, a conditional statement we have seen in this course a few times.