Read and Write Content Between Files

1#include <stdio.h>
2
3int main() {
4    FILE *source, *dest;
5    char ch;
6    
7    source = fopen("source.txt", "r");
8    if (source == NULL) {
9        printf("Cannot open source file!\n");
10        return 1;
11    }
12    
13    dest = fopen("destination.txt", "w");
14    if (dest == NULL) {
15        printf("Cannot create destination file!\n");
16        fclose(source);
17        return 1;
18    }
19    
20    printf("Copying file contents...\n\n");
21    
22    // Copy character by character
23    while ((ch = fgetc(source)) != EOF) {
24        fputc(ch, dest);
25        putchar(ch);  // Also print to console
26    }
27    
28    printf("\n\nFile copied successfully!\n");
29    
30    fclose(source);
31    fclose(dest);
32    
33    return 0;
34}