Please Explain Comma Operator in this Program
问题 Please explain me the output of this program: int main() { int a,b,c,d; a=10; b=20; c=a,b; d=(a,b); printf(\"\\nC= %d\",c); printf(\"\\nD= %d\",d); } The output which I am getting is: C= 10 D= 20 My doubt is what does the \",\" operator do here? I compiled and ran the program using Code Blocks. 回答1: The , operator evaluates a series of expressions and returns the value of the last. c=a,b is the same as (c=a),b . That is why c is 10 c=(a,b) will assign the result of a,b , which is 20, to c .