【C++】1018 锤子剪刀布 (20 分)-优快云博客

本文链接：https://blog.youkuaiyun.com/m0_60764701/article/details/120685231

本文记录了一次寻找C++程序中字符数组溢出问题的过程，作者通过分析第五个测试点的数据量，揭示了由于数据超出范围导致的溢出错误。文章强调了在编程中注意数据类型选择的重要性，以及如何从错误中学习和提升编程技能。

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easy item我竟然找了2小时bug.........蚌埠住了

#include <iostream>
using namespace std;
int jia_chance[3] = {0}, yi_chance[3] = {0 };
//原本这里不小心写成了char jia_chance[3] = {0}, yi_chance[3] = {0 };
/*最奇葩的是char在这个题目有四个测试点都能通过，就是第五个不能通过，现在我明白了：第五个测试点用的数据量比较大，加上去的值超过了255，溢出了...*/
int jia_win = 0, yi_win = 0;
void judge(char jia, char yi);
int main(void)
{
	char BCJ[3] = {'B','C','J'};
	int n = 0, yi_max = 0, jia_max = 0;
	char jia = 0, yi = 0;
	cin >>n;
	for (int i = 0; i != n; ++i)
	{
		cin >> jia >> yi;
		judge(jia, yi);
	}
	jia_max = jia_chance[0] >= jia_chance[1] ? 0 : 1;
	jia_max = jia_chance[jia_max] >= jia_chance[2] ? jia_max : 2;
	yi_max = yi_chance[0] >= yi_chance[1] ? 0 : 1;
	yi_max = yi_chance[yi_max] >= yi_chance[2] ? yi_max : 2;
	cout << jia_win << ' ' << n - jia_win - yi_win << ' ' << yi_win << endl;
	cout << yi_win << ' ' << n - jia_win - yi_win << ' ' << jia_win << endl;
	cout << BCJ[jia_max] << ' ' << BCJ[yi_max];
	return 0;
}
void judge( char jia, char yi)
{
	if (jia == 'C' && yi == 'J')
	{
		++jia_chance[1];
		++jia_win;
	}
	else if (jia == 'J' && yi == 'B')
	{
		++jia_chance[2];
		++jia_win;
	}
	else if (jia == 'B' && yi == 'C')
	{
		++jia_chance[0];
		++jia_win;
	}
	else if (yi == 'C' && jia == 'J')
	{
		++yi_chance[1];
		++yi_win;
	}
	else if (yi == 'J' && jia == 'B')
	{
		++yi_chance[2];
		++yi_win;
	}
	else if (yi == 'B' && jia == 'C')
	{
		++yi_chance[0];
		++yi_win;
	}
}