#include <iostream>
using namespace std;
int main()
{
string text="data.txt";
cout<<text.replace((text.size()-3),3,"jpg")<<endl;
cout<<("love "+text)<<endl;
}
#include <iostream>
#include <fstream>
#include <sstream>
#include <vector>
using namespace std;
vector<string> vec;
string a[18];
int i=0;
ifstream in_file("data.txt");
string str_line;
int main()
{
while(getline(in_file,str_line,','))
{
string str_tmp;
stringstream ss(str_line);
while(ss>>str_tmp)
{
a[i]=str_tmp;
cout << "a"<<i <<"="<<a[i]<<endl;
i=i+1;
}
}
in_file.close();
}
#include <stdio.h>
#include <dirent.h>
#include <sys/types.h>
int main()
{
DIR* d=opendir(".");
if(d==NULL)
{
printf("d == NULL");
}
struct dirent* entry;
while((entry=readdir(d))!=NULL)
{
puts(entry->d_name);
}
closedir(d);
return 0;
}