source files

1. Multiple source files add.c and subtract.c are in one folder, the file structure is as follows:head.h #ifndef _HEAD_H #define _HEAD_H // Add int add(int a, int b); // Subtract int subtract(int a, int b); #endif add.c #include <stdio.h> #include "head.h" // Add int add(int a, int b) { return a + b; } subtract.c … Read more