使用scanf后程序崩溃

Question

这是我编写的一个程序，用于计算飞机起飞时间，并且飞行一秒钟。但是当我运行程序并在控制台中插入第一个数字时，它会立即崩溃。

#include <stdio.h>

int main (void) {
    int m, s;
    int u;
    long flight, landing;

    printf("insert time of taking a plane:\n time in hours: "); 
    scanf("%d, &u");
    printf(" minutes: ");
    scanf("%d", &m);
    printf(" seconds: ");
    scanf("%d", &s);
    printf("Duration of a flight (in seconds): ");
    scanf("%ld", &flight);
    pristanek = u * 3600 + m * 60 + s + let;
    u = landing / 3600;
    m = (landing % 3600) % 60;
    s = landing % 60;
    printf("Time of landing; %d:%02d:%02d\n", u, m, s);
    return 0;
}

Answer 1

这是因为scanf的正确语法是：

scanf("%d", &u); // notice the " is after the "d"

你实际上已经在其他scanf中做到了。