Apps

main

[int] main([ int argc, char *argv[] ]) {
    ...
    return 0;
}                       

• Every C program must have a "main" function in one of the .c files.

Example

#include <stdio.h>
main() {
    printf("Hello, world!\n");
    return 0;
}

Compiling and running

g++

g++ [-o EXE-FILE] MAIN-FILE  [SUB-FILE]*

• By default, "a.out" is used for the executable file.
  

Examples

g++ main.cpp

g++ -o run main.cpp node.cpp