[英]c++ error: debug assertion failed
I am trying to run this program on visual studio 2010 Pro. 我试图在Visual Studio 2010 Pro上运行此程序。 I can compile it successfully but when I run the programm I get The following error:
我可以成功编译它,但是运行程序时出现以下错误:
Debug Assertion Failed! 调试断言失败! Expression: Vector subscript out of range.
表达式:向量下标超出范围。
in this simple programme I am trying to compute the maximum sum of consecutif non nul numbers in a vector of integers. 在这个简单的程序中,我试图计算整数向量中连续的非nul数的最大和。
#include "stdafx.h"
#include <iostream>
#include <vector>
using namespace std;
int somme(vector<int> tab);
int main() {
vector<int> tab;
tab[0] = 2;
tab[1] = 3;
tab[2] = 0;
tab[3] = 0;
tab[4] = 4;
cout <<somme_consecutifs_max(tab) << endl;
return 0;
}
int somme(vector<int> tab){
int sum(0);
int max(0);
for (int i = 0; i < tab.size(); ++i){
if(tab[i] != 0) {
sum += tab[i];
}
else{
if(sum > max){
max = sum;
}
sum = 0;
}
}
return max;
}
on the other hand, why do I cannot initialize my vector of int in Visual Studio 2010 in this why: 另一方面,为什么我不能在Visual Studio 2010中初始化我的int向量,原因如下:
vector<int> tab = {1, 2, 0, 0, 3};
When you do this 当你这样做
vector<int> tab;
you initialize a size 0 vector, which you immediately access out of bounds. 您初始化一个大小为0的向量,您可以立即访问该向量。 You need
你需要
vector<int> tab(5);
to make a size-5 vector. 制作5号尺寸的矢量。 Alternatively, you can push elements back into the vector, increasing the size by one each time.
或者,您可以将元素推回到向量中,每次将大小增加一。
vector<int> tab;
tab.push_back(2);
tab.push_back(3);
....
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