C语言可移植整数类型名

/* altnames.c -- portable names for integer types */
#include <stdio.h>
#include <inttypes.h> // supports portable types
int main(void)
{
    int32_t me32;     // me32 a 32-bit signed variable

    me32 = 45933945;
    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;
}