(C++) std::putc

 

std::putc is a C-style function to append a character to a file.

 

• Download the Qt Creator project 'CppPutc' (zip)

 

 

 

 

 

Technical facts

 

Application type(s)

• Desktop application

Operating system(s) or programming environment(s)

• Lubuntu 12.04 (precise)

IDE(s):

• Qt Creator 2.4.1

Project type:

• Console application

C++ standard:

• C++98

Compiler(s):

• G++ 4.6.3

Libraries used:

• Qt: version 4.8.1 (32 bit)
• STL: GNU ISO C++ Library, version 4.6.3

 

 

 

 

 

Qt project file: Cppstd::putc.pro

 

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QT       += core QT       -= gui TARGET = Cppstd::putc CONFIG   += console CONFIG   -= app_bundle TEMPLATE = app SOURCES += main.cpp

 

 

 

 

 

main.cpp

 

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#include <cassert> #include <cstdio> #include <string> int main () {   const std::string filename = "tmp.txt";   const char my_char = 'x';   {     //Open file for writing, clears the file when opening     FILE * const file = std::fopen(filename.c_str(),"w");     //Write my_char to file     std::putc(my_char,file);     //Close the file     std::fclose (file);   }   {     //Open file for reading     FILE * const file = std::fopen(filename.c_str(),"r");     //Read char from file     const char c = std::getc(file);     //Close the file     std::fclose (file);     //Assume the character written is the same as the one read     assert(my_char == c);   } }