[C] fwrite 예제

fwrite를 이용한 파일에 내용 써넣기 예제..

#include <stdio.h>
#include <string.h>
#include "common.h"


void setValue(char *buf)
{
        char tempBuf[64];
        memset(tempBuf, 0x00, sizeof(char) * 64);

        int a = 0;
       
        sprintf(tempBuf, "test %d\n", a);
        strcat(buf, tempBuf);
       
        sprintf(tempBuf, "test2 %d\n", a+1);
        strcat(buf, tempBuf);
       
        sprintf(tempBuf, "\n%d\t%d\n%d\t%d\n\n", a+1, a+2, a+3, a+4);
        strcat(buf, tempBuf);
       
        sprintf(tempBuf, "test3 %2d\n", a+5);
        strcat(buf, tempBuf);
       
        for(int idx = 0; idx < 50; idx++)
        {
                sprintf(tempBuf, "use the for-statement %2d\n", idx);
                strcat(buf, tempBuf);
        }

}


int main( void )
{
        FILE *fpRW;

        char writeBuf[4096];
        memset(writeBuf, 0x00, sizeof(char) * 4096);

        setValue(writeBuf);

        fpRW = fopen(".\\test.txt", "w+");
       
        fwrite(writeBuf, sizeof(char), strlen(writeBuf), fpRW);
       
        fclose(fpRW);

        return 0;
}