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来源：互联网发布：python 支付宝接口编辑：程序博客网时间：2024/04/30 06:18

运行环境Win-tc

/* HELLO.C -- Hello, world */

#include <stdio.h>
#include <stdlib.h>

#define SECONDS_PER_YEAR (unsigned long)60 * 60 * 24 * 365

void main()
{

unsigned long out=0;
out = SECONDS_PER_YEAR;
printf("%lu/n",out);
getch();
}

正确输出结果：31536000

/* HELLO.C -- Hello, world */

#include <stdio.h>
#include <stdlib.h>

#define SECONDS_PER_YEAR (unsigned long)(60 * 60 * 24 * 365)

void main()
{

unsigned long out=0;
out = SECONDS_PER_YEAR;
printf("%lu/n",out);
getch();
}

错误输出结果：13184

/* HELLO.C -- Hello, world */

#include <stdio.h>
#include <stdlib.h>

#define SECONDS_PER_YEAR 60 * 60 * 24 * 365

void main()
{

unsigned long out=0;
out = (unsigned long)SECONDS_PER_YEAR;
printf("%lu/n",out);
getch();
}

正确输出结果：31536000

/* HELLO.C -- Hello, world */

#include <stdio.h>
#include <stdlib.h>

#define SECONDS_PER_YEAR 60 * 60 * 24 * 365

void main()
{

unsigned long out=0;
out = (unsigned long)(SECONDS_PER_YEAR);
printf("%lu/n",out);
getch();
}

错误输出结果：13184

/* HELLO.C -- Hello, world */

#include <stdio.h>
#include <stdlib.h>

#define SECONDS_PER_YEAR 60 * 60 * 24 * 365

void main()
{
int out=0;
out = SECONDS_PER_YEAR;
printf("%d/n",out);
getch();
}

错误输出结果：13184