整数类型可移植名称

#include <stdio.h>
#include <inttypes.h> // supports portable types

int main(void){

    int32_t me32;     // me32 a 32-bit signed variable

    me32 = 12345678;
    printf("First, assume int32_t is int: ");
    printf("me32 = %d/n", me32);
    printf("Next, let's not make any assumptions./n");
    printf("Instead, use a /"macro/" from inttypes.h: ");
    printf("me32 = %" PRId32 "/n", me32);

    return 0;
}