vector push_back and erase
i m supposed to write a program where user can enter and data from a vector file. Here is my code:
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#include<iostream>
#include<vector>
using namespace std;
int main()
{
vector<int> vec;
bool quit=false;
while(!quit)
{
cout<<"vec.size():"<<vec.size()<<endl;
cout<<"vec contains:";
for(int i=0;i,vec.size();i++)
cout<<vec[i]<<"";
cout<<endl;
cout<<"1.add,2.remove,3.exit ";
int input=0;
cin>>input;
switch(input)
{
case 1:
cout<<"enter digit: ";
cin>>input;
vec.push_back(input);
break;
case 2:
cout<<"enter digit index to remove: ";
cin>>input;
if(input>0&&input<vec.size())
vec.erase(vec.begin()+input);
break;
case 3:
quit=true;
break;
}
}
}
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problem is as soon as i try to enter a digit the program stops.
Your problem is the reuse of the variable input. use a different one for your number in the switch.
No. The problem is on line 12. i,vec.size() should be i < vec.size().
MyClangers++
thanks peter87. My bad i did'nt noticed it.
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