fopen - Opens file by using file pointer in C



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

  int main(int argc, char *argv[])
  {
      FILE *fp;
   
      if ((fp = fopen("test", "w"))==NULL) {
        printf("Cannot open file.\n");
        exit(1);
      }
      fclose(fp);
  }