std::fgets

From cppreference.com

Defined in header `<cstdio>`

char fgets( char str, int count, FILE *stream );

Reads at most count - 1 characters from the given file stream and stores them in str. The produced character string is always NULL-terminated. Parsing stops if end-of-file occurs or a newline character is found, in which case str will contain that newline character.

#include <iostream>
#include <cstdio>
#include <cstdlib>
 
int main()
{
    FILE* tmpf = std::tmpfile();
    std::fputs("Alan Turing\n", tmpf);
    std::fputs("John von Neumann\n", tmpf);
    std::fputs("Alonzo Church\n", tmpf);
 
    std::rewind(tmpf);
    char buf[8];
    while (std::fgets(buf, sizeof buf, tmpf) != NULL) {
        std::cout << '"' << buf << '"' << '\n';
    }
}

Output:

"Alan Tu"
"ring
"
"John vo"
"n Neuma"
"nn
"
"Alonzo "
"Church
"

[edit] See also


scanf fscanf sscanf	reads formatted input from stdin, a file stream or a buffer (function)

gets	reads a character string from stdin (function)

fputs	writes a character string to a file stream (function)

Language
Standard library headers
Concepts
Utilities library
Strings library
Containers library
Algorithms library
Iterators library
Numerics library
Input/output library
Localizations library
Regular expressions library (C++11)
Atomic operations library (C++11)
Thread support library (C++11)

std::fgets

Contents

[edit] Parameters

[edit] Return value

[edit] Example

[edit] See also

str	-	string to read the characters to
count	-	the length of `str`
stream	-	file stream to read the data from