C语言日志存储小程序

#define _CRT_SECURE_NO_WARNINGS #include #include #include #include #include

#define MAX_FILE_LEN 1024*1024 char* GetNowTime();

void Setlogpath(char* logpath, int logpathLen, char* FileName); long GetFileSize(char* FileName);

void WriteLog(char* FileName, char* logbuf, int logbufsize);

void main() {

char* TM = GetNowTime(); printf(\当前时间是：%s\\n\, TM); if (NULL != TM) { }

//TEST 文件路径和文件名设置 char logpath[20] = \; int len = strlen(logpath); char filename[50] = { 0 };

Setlogpath(logpath, len, filename); printf(\文件为：%s\\n\, filename); //TEST 文件大小获取

long length = GetFileSize(filename); printf(\文件大小为：%d\\n\, length); //TEST写日志

for (int i = 0; i<1; ++i) {

char* TM = GetNowTime(); printf(\, TM); if (NULL != TM) { }

char strbuf1[32];

free(TM); TM = NULL; free(TM); TM = NULL;

}

}

memset(strbuf1, 0, sizeof(strbuf1)); sprintf(strbuf1, \, i);

WriteLog(filename, strbuf1, strlen(strbuf1)); printf(\文件为：%s\\n\, strbuf1); Sleep(100); // 毫秒 sleep(1); // 秒

#ifdef WIN32 #else #endif

printf(\); system(\); return;

//获取当前系统时间 char* GetNowTime() { }

void Setlogpath(char* logpath, int logpathLen, char* FileName)//路径设置,文件名 { }

long GetFileSize(char* FileName)//获取文件大小 {

long length = 0; if (FileName != NULL) {

struct tm* strTm; time_t ttime; time(&ttime);

strTm = localtime(&ttime);

memcpy(FileName, logpath, logpathLen);

sprintf(FileName + logpathLen, \, strTm->tm_year + 1900, strTm->tm_mon struct tm* strTm; time_t ttime; time(&ttime);

strTm = localtime(&ttime);

char* NowTimeBuf = (char*)malloc(20 * sizeof(char));

sprintf(NowTimeBuf, \, strTm->tm_year + 1900,

strTm->tm_mon + 1, strTm->tm_mday, strTm->tm_hour, strTm->tm_min, strTm->tm_sec); return NowTimeBuf;

+ 1, strTm->tm_mday);

}

}

FILE* fp = NULL;

fp = fopen(FileName, \); if (fp != NULL) { }

if (fp != NULL) { }

fclose(fp); fp = NULL;

fseek(fp, 0, SEEK_END); length = ftell(fp);

return length;

void WriteLog(char* FileName, char* logbuf, int logbufsize)//写日志 {

if (NULL != FileName && NULL != logbuf) {

if (GetFileSize(FileName) < MAX_FILE_LEN) { }

//文件写操作 FILE* fp = NULL;

fp = fopen(FileName, \); if (NULL != fp) { }

fclose(fp); fp = NULL;

char* TM = GetNowTime();

fwrite(TM, 20, 1, fp);//时间记录

fwrite(logbuf, logbufsize, 1, fp);//内容记录 if (NULL != TM) { }

free(TM); TM = NULL;

}

}