리눅스 \r 출력관련.

#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#include<math.h>
#include<unistd.h>
#define MAX_COUNT 10
 
int main()
{
        FILE *fp;
        char *ch ="+-"; // element unit (positive or negative)
        char op;
        int i=0;
        char CR = '\r';
        int people;
        if((fp=fopen("data.txt","w"))==NULL){ //data file
                printf("file open error\n"); //exception handling  - file open error
        }
        printf("\n");
        srand(10);
        for(i=0;i<MAX_COUNT;i++){
        people = (rand()%10)+1;
        op = ch[people%2]; //choseing unit (pos or neg)
        printf("\r  [out]   %c  %2d people",op,people);
        sleep(1);
        }
        return 0;
}