C program to write and read text file

#include<stdio.h>
int main()
{
    /* File pointer to hold reference to our file */
    FILE *fp,*fp1;
    char c;
  /*Open file in w (write) mode mode. */
    fp=fopen("var.txt","w");
    if(!fp)
    {printf("file is not present");
    exit(1);
    }
    printf("write a file:");
    while(c!='*')
    {
       /* getche(): read a single character from the keyboard  */ 
        c=getche();
       /*fputc: write a single character at a time to a given file */
        fputc(c,fp);
    }
/* after writing closed the file */
    fclose(fp);

/*Open file in r (read) mode mode. */
    fp1=fopen("var.txt","r");
    if(!fp1)
    { 
     printf("file is not open");
     /* Unable to open file hence exit */
     exit(1);
    }
    printf("\nread a file:\n");
    do{
        /*fgetc(): read single character from file */.
        c=fgetc(fp1);
        printf("%c",c);
      }
    while(!feof(fp1));
    fclose(fp1);
    return 0;
}