成员函数substr题解 | #截取字符串#
截取字符串
http://www.nowcoder.com/practice/a30bbc1a0aca4c27b86dd88868de4a4a
#include<bits/stdc++.h>
using namespace std;
int main()
{
string str;
while( cin>>str )
{
int n;
scanf("%d",&n);
if( n>str.size() )
{
printf("%s\n", str.c_str() );
}
else
{
printf("%s\n", str.substr(0,n).c_str() );
}
}
return 0;
} 
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