c - 如何使用 printf 格式化 unsigned long long int？

Question

#include <stdio.h>
int main() {
    unsigned long long int num = 285212672; //FYI: fits in 29 bits
    int normalInt = 5;
    printf("My number is %d bytes wide and its value is %ul. A normal number is %d.\n", sizeof(num), num, normalInt);
    return 0;
}

输出:

My number is 8 bytes wide and its value is 285212672l. A normal number is 0.

我认为这个意外结果是由于打印unsigned long long int而产生的。如何printf()输出unsigned long long int？

Answer 1

使用 ll (el-el) long-long 修饰符和 u(无符号)转换。 (适用于 Windows、GNU)。

printf("%llu", 285212672);