+=   Assignment Operators in C, Add AND assignment operator. It adds the right operand to the left operand and assign the result to the left operand.

C Programming Language / Operators and Enums in C Language

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Program:

//Assignment operator 

#include"stdio.h"
void main() {

   int a = 2;
   int c = 12 ;
   c +=  a; // c=c+a c=12+2=14
   printf(" +=  Operator Example\n Value of c = %d \n", c );
}

Output:

 +=  Operator Example
 Value of c = 14
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