C 鍜?C++ 浜掔浉璋冪敤
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C 璋?C++
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
$ cat a.cpp
# --------------------------------------------------------------------------------------
#include
#include
class student{
public: std::string name;
public: int age;
public: void show_age(void){
std::cout << name << "鈥榮 age is : " << age << std::endl;
}
};
extern "C" void f(int);
void f(int i){
std::cout << "in f function i value is : " << i <<std::endl;
}
extern "C" void *create_student( void );
void *create_student( void ){
student *xiaoming = NULL;
xiaoming = new student();
xiaoming->student::name = "灏忔槑";
xiaoming->student::age = 24;
std::cout << "create successful" << std::endl;
return xiaoming;
}
extern "C" void show_student( void *std );
void show_student( void *std){
((student*)std)->student::show_age();
}
# ======================================================================================
$ cat b.c
# --------------------------------------------------------------------------------------
#include
extern void f(int);
extern void *create_student(void);
extern void show_student(void*);
int main( int argv, char **argc ){
void *std;
std = create_student();
show_student( std );
return 0;
}
# ======================================================================================
$ cat Makefile
# --------------------------------------------------------------------------------------
CC=gcc
CPP=g++
MAKEDEPEND=gcc -MM -MT
DEFINC =
LDFLAGS += -lstdc++
CSRCS += b.c
CPPSRCS += a.cpp
COBJS = $(CSRCS:.c=.o)
CPPOBJS = $(CPPSRCS:.cpp=.o)
# CDEF = $(CSRCS:.c=.d)
# CPPDEF = $(CPPSRCS:.cpp=.d)
TAR_NAME=test
DEF_RUNTAG += show_all_param
DEF_RUNTAG += $(TAR_NAME)
ALL: $(DEF_RUNTAG)
$(COBJS):%.o:%.c
$(CC) -c $< -o [email protected]
$(CPPOBJS):%.o:%.cpp
$(CPP) -c $< -o [email protected]
# $(CDEF):%.d:%.c
# $(MAKEDEPEND) $(<:.c=.o) $< $(DEFINC) > [email protected]
# $(CPPDEF):%.d:%.cpp
# $(MAKEDEPEND) $(<:.cpp=.o) $< $(DEFINC) > [email protected]
$(TAR_NAME):$(COBJS) $(CPPOBJS)
$(CC) -o $(TAR_NAME) $(COBJS) $(CPPOBJS) $(LDFLAGS)
[email protected] -rf $(COBJS)
[email protected] -rf $(CPPOBJS)
[email protected] -rf $(CDEF)
[email protected] -rf $(CPPDEF)
show_all_param:
@echo $(CC)
@echo $(CPP)
@echo $(CSRCS)
@echo $(CPPSRCS)
@echo $(COBJS)
@echo $(CPPOBJS)
@echo $(CDEF)
@echo $(CPPDEF)
@echo $(DEF_RUNTAG)
clean:
[email protected] -rf $(COBJS)
[email protected] -rf $(CPPOBJS)
[email protected] -rf $(CDEF)
[email protected] -rf $(CPPDEF)
[email protected] -rf $(TAR_NAME)
#include $(CDEF)
#include $(CPPDEF)
# ======================================================================================
C++ 璋?C
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
$ cat c.c
# --------------------------------------------------------------------------------------
#include
int show_student_msg( const char *iname, int iage ){
const char *tname = (const char*)iname;
printf("student %s age: %d\n", tname, iage);
return -1;
}
# ======================================================================================
$ cat d.cpp
# --------------------------------------------------------------------------------------
#include
extern "C"{
extern int show_student_msg( const char *iname, int iage );
}
int main( int argv, char *argc[] ){
std::cout<< "hello world!" << std::endl;
show_student_msg( "灏忔槑", 24 );
const char *tname1 = "灏忓崕";
std::string tname2( tname1 );
show_student_msg( tname2.c_str(), 24 );
}
# ======================================================================================
$ cat Makefile
# --------------------------------------------------------------------------------------
CC=gcc
CPP=g++
MAKEDEPEND=gcc -MM -MT
DEFINC =
LDFLAGS += -lstdc++
CSRCS += c.c
CPPSRCS += d.cpp
COBJS = $(CSRCS:.c=.o)
CPPOBJS = $(CPPSRCS:.cpp=.o)
# CDEF = $(CSRCS:.c=.d)
# CPPDEF = $(CPPSRCS:.cpp=.d)
TAR_NAME=test
DEF_RUNTAG += show_all_param
DEF_RUNTAG += $(TAR_NAME)
ALL: $(DEF_RUNTAG)
$(COBJS):%.o:%.c
$(CC) -c $< -o [email protected]
$(CPPOBJS):%.o:%.cpp
$(CPP) -c $< -o [email protected]
# $(CDEF):%.d:%.c
# $(MAKEDEPEND) $(<:.c=.o) $< $(DEFINC) > [email protected]
# $(CPPDEF):%.d:%.cpp
# $(MAKEDEPEND) $(<:.cpp=.o) $< $(DEFINC) > [email protected]
$(TAR_NAME):$(COBJS) $(CPPOBJS)
$(CPP) -o $(TAR_NAME) $(COBJS) $(CPPOBJS) $(LDFLAGS)
[email protected] -rf $(COBJS)
[email protected] -rf $(CPPOBJS)
[email protected] -rf $(CDEF)
[email protected] -rf $(CPPDEF)
show_all_param:
@echo $(CC)
@echo $(CPP)
@echo $(CSRCS)
@echo $(CPPSRCS)
@echo $(COBJS)
@echo $(CPPOBJS)
@echo $(CDEF)
@echo $(CPPDEF)
@echo $(DEF_RUNTAG)
clean:
[email protected] -rf $(COBJS)
[email protected] -rf $(CPPOBJS)
[email protected] -rf $(CDEF)
[email protected] -rf $(CPPDEF)
[email protected] -rf $(TAR_NAME)
#include $(CDEF)
#include $(CPPDEF)
# ======================================================================================
璇风瓑寰呮洿鏂?..
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