iOS Development Learning Record the 6th day of C language learning-----comma expression

the introduction and use of the comma expression

1. Concatenate multiple expressions to form an expression, usage: expression 1, expression 2, expression 3, expression N... Returns the value of the last expression

Example:

#include <stdio.h>int main (int argc, const char * argv[]) {    int a=2,b=3,c=4,x=0,y=0,z=0,result=0;    result= (x=a+b,y=b+c,z=x+y);//At this time x=2+3,y=3+4,z=5+7    printf ("x=%d,y=%d,z=%d", X, Y, z);//5,7,12    printf (" The value of the last result is:%d ", result);//result takes the value of the last expression, which is both        return 0;}

iOS Development Learning Record the 6th day of C language learning-----comma expression