Save data to file before program will close not after [closed]

StackOverflow https://stackoverflow.com/questions/20407256

  •  29-08-2022
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Question 

  if(RS_ile==1) 
  { 
     if(RS_buf == 1)   break; 
     if(RS_buf==49)
     printf("1\n");
     else
     {

     printf("%d\n", RS_buf); 
     fprintf (fp, "%d\n", RS_buf);
      fclose (fp);
     }  
  }

Everything work fine but all data was saved after I close my program. All I need is to put date to file while program is running not after closed.

Operating system Windows 8.1

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Solution

Put a fflush(fp) ; after your fprintf.

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