fwrite : fwrite « stdio.h « C Tutorial






  1. C Tutorial
  2. stdio.h
  3. fwrite
ItemValue
Header filestdio.h
Declarationsize_t fwrite(const void *buf, size_t size, size_t count, FILE *stream);
Functionwrites count number of objects.
Returnreturns the number of items written on success. Fewer items written means failure.


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

  int main(void)
  {
    FILE *fp;
    float f=12.23;

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

    fwrite(&f, sizeof(float), 1, fp);

    fclose(fp);

    return 0;
  }








22.19.fwrite
22.19.1.fwrite