std::fgetc, std::getc
From cppreference.com
| Defined in header <cstdio>
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Reads the next character from the given input stream.
Parameters
| stream | - | to read the character from |
Return value
The obtained character on success or EOF on failure.
If the failure has been caused by end of file condition, additionally sets the eof indicator (see std::feof()) on stream. If the failure has been caused by some other error, sets the error indicator (see std::ferror()) on stream.
Example
Run this code
#include <cstdio> #include <cstdlib> int main() { FILE* fp = std::fopen("test.txt", "r"); if(!fp) { std::perror("File opening failed"); return EXIT_FAILURE; } int c; // note: int, not char, required to handle EOF while ((c = std::fgetc(fp)) != EOF) { // standard C I/O file reading loop std::putchar(c); } if (std::ferror(fp)) std::puts("I/O error when reading"); else if (std::feof(fp)) std::puts("End of file reached successfully"); std::fclose(fp); }
See also
| (removed in C++14) |
reads a character string from stdin (function) |
| writes a character to a file stream (function) | |
| puts a character back into a file stream (function) |