#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,n;
    char *buffer;
    printf("Introduceti lungimea sirului: ");
    scanf("%d",&i);
    buffer = (char*) malloc(i+1);
    if (buffer == NULL) exit(1);
    for(n=0;n<i;n++) buffer[n]=rand() %26 + 'a';
    buffer[i]='\0';
    printf("Random string: %s",buffer);
    free(buffer);
    return 0;
}