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Compilation IO Guide

Compile and Execute C++ Program with Input and Output Redirection​

Standard

g++-14 -std=c++17 -Wall -O2 -fno-sanitize-recover -o A A.cpp

Debug

g++-14 -std=c++17 -DDEBUG -Wall -O2 -fno-sanitize-recover -o A A.cpp

Running

./A < A.in > A.out

Explanation​

This command compiles and executes a C++ program, redirecting the input and output to specific files. Below is a breakdown of the command: (Useful for competitive programming)

  • g++-14: Specifies the version of the GNU C++ Compiler, in this case, version 14.
  • -std=c++17: Instructs the compiler to use the C++17 standard for compilation.
  • -Wall: Enables all compiler warnings, which helps in identifying potential issues.
  • -O2: Activates a moderate level of optimization to improve the performance of the compiled program.
  • -fno-sanitize-recover: Ensures the program stops execution immediately when encountering a sanitization error, instead of attempting to recover.
  • -DDEBUG: Defines the macro DEBUG, enabling any conditional compilation sections related to debugging within the source code.
  • -o A: Specifies that the output executable file will be named A.
  • A.cpp: The source file to be compiled.
  • ./A < A.in > A.out: Executes the compiled program, reading input from the file A.in and writing the output to the file A.out.

This method is efficient for running programs with predefined input and capturing the output into a file for further analysis or documentation purposes.