MOOC清华《面向对象程序设计》第1章：源文件的拆分与多文件的编译运行

建立一个工程，工程包含三个文件：main.cpp, func.h, func.cpp.

main.cpp:

//main.cpp#include <iostream>#include <cstdio>  // atoi()#include "func.h"  // ADD()/* run this program using the console pauser or add your own getch, system("pause") or input loop */int main(int argc, char** argv) {if(argc != 3){std::cout << "Usage: " << argv[0]<< " op1 op2" << std::endl;return 1;}int a, b;a = atoi(argv[1]);b = atoi(argv[2]);std::cout << ADD(a, b) << std::endl;return 0;}

func.h:

//func.h#ifndef FUNC_H#define FUNC_Hint ADD(int a, int b);#endif//实验证明：预编译操作符后面跟FUNC_H或func.h都是可以编译通过的 /* #ifndef func.h#define func.hint ADD(int a, int b);#endif*/

func.cpp:

//func.cpp#include "func.h"int ADD(int a, int b){return a + b;}

Dev Cpp自动生成的Makefile文件内容为：

# Project: Project001# Makefile created by Dev-C++ 5.11CPP      = g++.exeCC       = gcc.exeWINDRES  = windres.exeOBJ      = main.o func.oLINKOBJ  = main.o func.oLIBS     = -L"C:/Program Files/Dev-Cpp/MinGW64/lib32" -L"C:/Program Files/Dev-Cpp/MinGW64/x86_64-w64-mingw32/lib32" -static-libgcc -m32INCS     = -I"C:/Program Files/Dev-Cpp/MinGW64/include" -I"C:/Program Files/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"C:/Program Files/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include"CXXINCS  = -I"C:/Program Files/Dev-Cpp/MinGW64/include" -I"C:/Program Files/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"C:/Program Files/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include" -I"C:/Program Files/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include/c++"BIN      = Project001.exeCXXFLAGS = $(CXXINCS) -m32 -std=c++11CFLAGS   = $(INCS) -m32 -std=c++11RM       = rm.exe -f.PHONY: all all-before all-after clean clean-customall: all-before $(BIN) all-afterclean: clean-custom${RM} $(OBJ) $(BIN)$(BIN): $(OBJ)$(CPP) $(LINKOBJ) -o $(BIN) $(LIBS)main.o: main.cpp$(CPP) -c main.cpp -o main.o $(CXXFLAGS)func.o: func.cpp$(CPP) -c func.cpp -o func.o $(CXXFLAGS)

编译运行时需要在“参数”窗口输入命令行参数。