CODEWITHSUNDEEP
c++parsinggetline
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Reputation: 53

Parsing Space Delimited Numbers from Getline

I am writing a small program that will read a plain ASCII text file containing 3 lines in 5 records, as follows:

f_name l_name
ID#
int int int int

I successfully put the first 2 lines in the 1D arrays where they belong, but I am having trouble putting the series of ints in the 2D array. My closest approach to the solution has been using the line: 

studentScores[row][col] = atoi(input.c_str());

However, atoi parses only the first number, then throws away the rest of the line. I need to put each number in the string in a separate element of the array. I tried using stringstream, but I cannot get it to work correctly; apparently, the function I want to use is included in a different version of stringstream than I am using.

What could I use to parse this string?

Upvotes: 1

Views: 3437

Answers (1)

ildjarn
ildjarn

Reputation: 62975

#include <string>
#include <sstream>

// ...

int ints[4];
std::string input;
std::getline(stream, input);
std::istringstream(input) >> ints[0] >> ints[1] >> ints[2] >> ints[3];

(Error handling omitted for brevity.)

Upvotes: 2

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