宏和函数

#include <stdio.h>

#define SQUARE(x) ((x)*(x))
int Squere(int x) {
    return (x * x);
}

int main(void) {
    int i = 1;
    while (i <= 5) {
        printf("i=%d,squre=%d\n", i, Squere(i++));
    }

    int j = 1;
    while (j <= 5) {
        printf("j=%d,squre=%d\n", j, SQUARE(j++));
    }

    return 0;
}

运行结果

i=1,squre=1
i=2,squre=4
i=3,squre=9
i=4,squre=16
i=5,squre=25
j=1,squre=2
j=3,squre=12
j=5,squre=30

https://www.cnblogs.com/clover-toeic/p/3851102.html