C语言运算符优先级 #

括号成员第一;
全体单目第二;
乘除余三,加减四;
移位五,关系六;
等于不等排第七;
位与异或位或八九十;
逻辑与或十一十二;
条件十三,赋值十四;
逗号十五最低.

#include <stdio.h>

int main() {
    int a = 2, b = 3, c = 4;
    
    printf("a + b * c = %d\n", a + b * c);
    printf("(a + b) * c = %d\n", (a + b) * c);
    printf("a * b + c = %d\n", a * b + c);
    printf("a * (b + c) = %d\n", a * (b + c));
    return 0;
}

a + b * c = 14
(a + b) * c = 20
a * b + c = 10
a * (b + c) = 14

#include <stdio.h>

int main() {
    int a = 1, b = 2, c = 3;
    
    printf("a < b < c = %d\n", a < b < c);
    printf("(a < b) && (b < c) = %d\n", (a < b) && (b < c));
    return 0;
}

a < b < c = 1
(a < b) && (b < c) = 1

#include <stdio.h>

int main() {
    int a = 1, b = 0, c = 1;
    
    printf("a || b && c = %d\n", a || b && c);
    printf("(a || b) && c = %d\n", (a || b) && c);
    return 0;
}

a || b && c = 1
(a || b) && c = 1

#include <stdio.h>

int main() {
    int a = 2, b = 4;
    
    printf("a & b == 0: %d\n", a & b == 0);
    printf("(a & b) == 0: %d\n", (a & b) == 0);
    return 0;
}

a & b == 0: 0
(a & b) == 0: 1

#include <stdio.h>

int main() {
    int a, b, c;
    a = b = c = 10;
    printf("a = %d, b = %d, c = %d\n", a, b, c);
    return 0;
}

int result = (a + b) * (c - d);

if ((a & b) == c) {
}

int result = ((a + b) * c - d) / e;

int temp1 = a + b;
int temp2 = temp1 * c;
int temp3 = temp2 - d;
int result = temp3 / e;

if (a & b == c) {
}

if ((a & b) == c) {
}

int a = 1 << 2 + 3;

int a = (1 << 2) + 3;

int a = 1 << (2 + 3);

*p++;
(*p)++;