Write C program to copy contents of one file to anor file.

include <stdio.h> 
#include <stdlib.h> // For exit() 
void main() 
{ 
    FILE *fptr1, *fptr2; 
    char filename[100], c; 
    printf("Enter the filename to open for reading \n"); 
    scanf("%s", filename); 
    // Open one file for reading 
    fptr1 = fopen(filename, "r"); 
    if (fptr1 == NULL) 
    { 
        printf("Cannot open file %s \n", filename); 
        exit(0); 
    } 
    printf("Enter the filename to open for writing \n"....

include  
#include  // For exit() 
void main() 
{ 
    FILE *fptr1, *fptr2; 
    char filename[100], c; 
    printf("Enter the filename to open for reading \n"); 
    scanf("%s", filename); 
    // Open one file for reading 
    fptr1 = fopen(filename, "r"); 
    if (fptr1 == NULL) 
    { 
        printf("Cannot open file %s \n", filename); 
        exit(0); 
    } 
    printf("Enter the filename to open for writing \n"); 
    scanf("%s", filename); 
    // Open another file for writing 
    fptr2 = fopen(filename, "w"); 
    if (fptr2 == NULL) 
    { 
        printf("Cannot open file %s \n", filename); 
        exit(0); 
    } 
    // Read contents from file 
    c = fgetc(fptr1); 
    while (c != EOF) 
    { 
        fputc(c, fptr2); 
        c = fgetc(fptr1); 
    } 
    printf("\nContents copied to %s", filename);
    fclose(fptr1); 
    fclose(fptr2); 
    }