#include<stdio.h>
#include<stdlib.h>

int main() {
    FILE * fp;
    char input[100]={0},cha;
    printf("Input data here under this line\n");
    printf("-------------------------------\n");
    int i=0;
    fp=fopen("/tmp/data.txt","w+");
    while(input[0]!='.'){
        while((cha=getchar())!='\n'&&cha!=EOF){
                input[i]=cha;
                i++;
        }
        input[i]='\0';
        i=0;
        fprintf(fp,"%s\n", input);
    }
    fclose(fp);
    printf("Output has been saved to /tmp/data.txt\nYou can safely close this window now.");
    return 0;
}