c 宏變量/宏函數/log

目錄

• macro
• macro log

macro

#include<iostream>
using namespace std;
#define LOG(str) printf("[%s][%s](%d)[%s][%s]:%s",__FILE__, __func__, __LINE__,__DATE__, __TIME__, str)
int main()
{
    LOG("log");
    return 0;
}

macro log

#include <stdio.h>

#define LOG_DEBUG "DEBUG"
#define LOG_TRACE "TRACE"
#define LOG_ERROR "ERROR"
#define LOG_INFO  "INFOR"
#define LOG_CRIT  "CRTCL"

#define LOG(level, format, ...) \
    do { \
        fprintf(stderr, "[%s|%s@%s:%d] " format "\n", \
            level, __func__, __FILE__, __LINE__, ##__VA_ARGS__ ); \
    } while (0)

int main()
{
    LOG(LOG_DEBUG, "a=%d,b=%d,c=%s", 10,20,"end");
    return 0;
}