C++ Programming Code Examples
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Word count for input file: file read with ifstream
/* Word count for input file: file read with ifstream */
#include <iostream>
#include <fstream>
#include <cctype>
using namespace std;
int main(int argc, char *argv[])
{
if(argc!=2) {
cout << "Usage: COUNT <input>\n";
return 1;
}
ifstream in(argv[1]);
if(!in) {
cout << "Cannot open input file.\n";
return 1;
}
int count=0;
char ch;
in >> ch; // find first non-space char
// after first non-space found, do not skip spaces
in.unsetf(ios::skipws);
while(!in.eof()) {
in >> ch;
if(isspace(ch)) {
count++;
while(isspace(ch) && !in.eof())
in >> ch; // find next word
}
}
cout << "Word count: " << count << '\n';
in.close();
return 0;
}
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