C/stdio.h/fputs

    
//Header file:     #include <stdio.h>  
//Declaration:     int fputs(const char *str, FILE *stream); 
//Return:          returns nonnegative on success or EOF on failure. 

  
  #include <stdio.h>
  #include <stdlib.h>
  int main(void)
  {
    FILE *fp;
    if((fp=fopen("test", "wb"))==NULL) {
      printf("Cannot open file.\n");
      exit(1);
    }
 
    fputs("this is a test", fp);
    fclose(fp);
  }