qt write to end file

Question

I need to write some text at the end of txt file. But i can only rewrite all file. How can i add text to the end of file?

Thank you.

Answer 1

Are you sure you are opening the file in the append mode? QIODevice::Append

Answer 2

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main(void)
{
    FILE *fp;
    size_t count;
    const char *str = "hello\n";

fp = fopen("yourFile.txt", "a");
if(fp == NULL) {
    perror("failed to open yourFile.txt");
    return EXIT_FAILURE;
}
count = fwrite(str, 1, strlen(str), fp);
printf("Wrote %u bytes. fclose(fp) %s.\n", count, fclose(fp) == 0 ? "succeeded" : "failed");return EXIT_SUCCESS;}

Just use the append "a" flag!