fflush: force the buffer contents to be written to the file : fflush « stdio.h « C / ANSI-C

1. C / ANSI-C
2. stdio.h
3. fflush

fflush: force the buffer contents to be written to the file

    

//Header:       #include <stdio.h>  
//Declaration:  int fflush(FILE *stream); 
//Return:       0 on success or EOF on error. 

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

  int main(void){
     FILE *fp;

     if((fp=fopen("test", "rb"))==NULL) {
        printf("Cannot open file.\n");
        exit(1);
     }

      char ch[] = "This is a text";
      int i;
      for(i=0; i<5; i++) {
        fwrite(ch, sizeof(ch), 1, fp);
        fflush(fp);
      }
      fclose(fp);
      return 0;
  }

           
       

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