= operator
The "=" is an assignment operator used to assign the value on the right to the variable on the left.
For example:
a = 10; b = 20; ch = 'y';
Example:
// C program to demonstrate
// working of Assignment operators
#include <stdio.h>
int main()
{
// Assigning value 10 to a
// using "=" operator
int a = 10;
printf("Value of a is %d\n", a);
return 0;
}
Output:
Value of a is 10
== operator
The ‘==’ operator checks whether the two given operands are equal or not. If so, it returns true. Otherwise it returns false.
For example:
5==5 This will return true.
Example:
// C program to demonstrate
// working of relational operators
#include <stdio.h>
int main()
{
int a = 10, b = 4;
// equal to
if (a == b)
printf("a is equal to b\n");
else
printf("a and b are not equal\n");
return 0;
}
Output:
a and b are not equal
The differences can be shown in tabular form as follows:
| = | == |
|---|---|
| It is an assignment operator. | It is a relational or comparison operator. |
| It is used for assigning the value to a variable. | It is used for comparing two values. It returns 1 if both the values are equal otherwise returns 0. |
| Constant term cannot be placed on left hand side. Example: 1=x; is invalid. | Constant term can be placed in the left hand side. Example: 1==1 is valid and returns 1. |
