How to open a CVS file in c++

[DiegoTc]

Hi
I am working on this small application(really small).
I have the followingcvs file name hola.cvs
This file has the following information


Diego,Turcios,18
Julian,Turcios,56
Julieta,Turcios,24
Otro,Turcios,56


and the code I am using is this one


#include <cstdio>
#include <iostream>
#include <string>
#include <iomanip>
using namespace std;
int main(){
FILE *arch =0;
char *buffer=new char [1];
string hola;
arch=fopen("hola.cvs","rb");
int a=0;
if(arch==0){
cout<<"Archivo no Existe";
return 0;
}
while(!feof(arch)){
fread(buffer,1,sizeof(buffer),arch);
if(buffer[0]!='\n'){
hola[a]=buffer[0];
a++;
}else{
for(int b=0;b<a;b++){
if(hola[b]!=',')
cout<<hola[b];
else
cout<<setw(5);
}
a=0;

}

}
fclose(arch);

}



My idea was to copy a complete line into a string, later print the string and each time a coma appears print a setw of 5 spaces, but it is not working :(

[dwhitney67]

You probably meant CSV (Comma Separated Value) file? In Spanish I suppose it would be VSC.

CVS is typically associated with Concurrency Revision System.

Anyhow, in C++, the use of fopen() is generally frowned upon because there are better utilities for opening files. For example, fstream.

For parsing, you can use the STL string's method find_first_of() to search for a comma. This will return a position marker that you can then use with the substr() method. Repeat this until you reach the end of the string.

There is a tokenizer class available with the Boost C++ library, but if you are learning to program (in C++), then I do not recommend you use it at this stage.