C语言 缓存区溢出 3221225725

问题描述

DEV-C报错 Process exited after 4.03 seconds with return value 3221225725

原因
数组定义的容量太大 - 五十万起步的样子
而且每次循环都会再定义一次，导致缓存区溢出

解决办法：

思路来源：
https://blog.csdn.net/qq_48508278/article/details/120358623

办法：数组定义在主函数外面 作为全局变量

#include<bits/stdc++.h>
#define num 10000
#define cmp <
using namespace std;

long a[1500000]; // 一百五十万

int main()
{
	srand(time(NULL));
	clock_t start, end; 
	double Total_time;
	long length; 
	
	long l = 600000;
	long b[10];
	for(int i = 0;i<10;i++) 
	{
		b[i] = l;
		l = l+100000;
	}
	

	
	for(l=0;l<10;l++)
	{
		start = clock();
		
		int k;
		length = b[l];
		
		for(k = 0;k<length;k++)
		{
			a[k] = rand()%num;
		}
		
		
		int i, j, temp;
		cout << "length = " << length <<  endl;
		cout << "开始直接插入排序(for)  ";
		for(i = 1; i < length; i++)
		{
			temp = a[i];
			for(j = i-1; j >= 0; j--)
			{
				if(temp cmp a[j])
					a[j + 1] = a[j];
				else
					break;
			}
			a[j + 1] = temp;
		}
		cout << "排序完成！ ";
		
		
		end = clock();
		Total_time = (double)(end - start) / CLOCKS_PER_SEC;
		cout << "用时 = " << Total_time << endl <<endl;
		start = end;
	}
	
	
	system("pause"); 
	return 0;
}