Lotto program

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

int main(void)
{
srand(time(NULL));
int lotto[7];
for(int i = 0; i < 7; )
{
lotto[i]=rand() % 45 + 1;
int j;
for(j = 0; j < i; ++j) {
if(lotto[j] == lotto[i])
break;
}
if(i == j) ++i; 
}
for(int i = 0; i < 7; ++i)
{
printf("%d ", lotto[i]);
}
printf("\n");
return 0;
}