Why is the return value of the fun function 8 instead of 7? [duplicate]

Question

With reference to Comma-Separated return arguments in C function [duplicate] ,

x=x+2,x+1; 

will be evaluated as

x=x+2;  

However, in case of the following code

#include<stdlib.h> #include<stdio.h>  int fun(int x) {     return (x=x+2,x+1); //[A] }  int main() {    int x=5;    x=fun(x);    printf("%d",x); // Output is 8 } 

Shouldn't line [A],be evaluated as

x=x+2; 

giving x = 7

Answer 1

The statement return (x = x + 2, x + 1); is equivalent to:

x = x + 2; // x == 7 return x + 1; // returns 8