Append Content of One Text File to Another

1#include <stdio.h>
2#include <time.h>
3
4int main() {
5    FILE *file = fopen("log.txt", "a");
6    
7    if (file == NULL) {
8        printf("Error opening file!\n");
9        return 1;
10    }
11    
12    // Get current time
13    time_t now = time(NULL);
14    char *timeStr = ctime(&now);
15    
16    // Append log entry
17    fprintf(file, "Log entry at %s", timeStr);
18    
19    fclose(file);
20    
21    printf("Log entry added!\n");
22    return 0;
23}