Create a Temporary File

1#include <stdio.h>
2
3int main() {
4    FILE *temp = tmpfile();
5    
6    if (temp == NULL) {
7        printf("Error creating temp file!\n");
8        return 1;
9    }
10    
11    // Write to temp file
12    fprintf(temp, "This is temporary data\n");
13    fprintf(temp, "Line 2 of temp file\n");
14    
15    // Read back (seek to beginning first)
16    rewind(temp);
17    
18    char buffer[100];
19    printf("Contents of temp file:\n");
20    while (fgets(buffer, sizeof(buffer), temp)) {
21        printf("%s", buffer);
22    }
23    
24    // File automatically deleted when closed
25    fclose(temp);
26    printf("\nTemp file closed and deleted.\n");
27    
28    return 0;
29}