std::fgetc, std::getc
From cppreference.com
| Defined in header <cstdio>
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Reads the next character from the given input stream.
Contents |
[edit] Parameters
| stream | - | to read the character from |
[edit] 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.
[edit] Example
Run this code
#include <cstdio> #include <cstdlib> int main() { int is_ok = EXIT_FAILURE; FILE* fp = std::fopen("/tmp/test.txt", "w+"); if (!fp) { std::perror("File opening failed"); return is_ok; } 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"); is_ok = EXIT_SUCCESS; } std::fclose(fp); return is_ok; }
Output:
End of file reached successfully
[edit] See also
| (deprecated in C++11)(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) | |
| C documentation for fgetc, getc
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