#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <locale.h>
int main()
{
int symbol;
char text[] ="текст";
setlocale(LC_ALL,"");
srand(time(0));

for (int i = 0; i <strlen(text);i++){
int r = rand()%strlen(text);
symbol = text[i];
text[i] = text[r];
text[r] = symbol;

}

printf("%s",text);

}