【原创】C语言逗号表达式

【原创】C语言逗号表达式

在C语言中，多个表达式可以用逗号分开，其中用逗号分开的表达式的值分别结算，整个表达式的值是最后一个表达式的值。

    示例代码：int main(int argc, char* argv[]){int i, j;i = (10-2, 3*4);j = 10-2, 3*4;printf("i = %d\n",i);printf("j = %d\n",j);return 0;}

/* 输出结果i = 12j = 8*/

int main(int argc, char* argv[]){int i, j, k;i = 0, j = 1, k = 2;printf("i = %d, j = %d, k = %d\n", i, j, k);i = (j++, k++);printf("i = %d, j = %d, k = %d\n", i, j, k);while (i = (rand()%100), i != 60){printf("i is %d, tring again...\n", i);}printf("\nGuess what? i is %d!\n", i);return 0;}

/*输出结果i = 0, j = 1, k = 2i = 2, j = 2, k = 3i is 41, tring again...i is 67, tring again...i is 34, tring again...i is 0, tring again...i is 69, tring again...i is 24, tring again...i is 78, tring again...i is 58, tring again...Guess what? i is 50!*/