#include <stdio.h> #include <string.h> #include "add.h" int main(void) { char buf[20] = ""; int nSize = 0; FILE* fp; fp = fopen("some.txt", "r"); while(1) { memset(buf, 0, sizeof(buf)); int rc = fread(buf, sizeof(char), sizeof(buf) - 1, fp); if (rc <= 0) break; printf("%s", buf); } fclose(fp); printf("\n"); printf("1 + 2 = %d\n", add(1,2)); return 0; }