The Dice Hacker Earth Problem Solution in C - good example for usage of continue in C

https://www.hackerearth.com/practice/basic-programming/implementation/basics-of-implementation/practice-problems/algorithm/the-dice-d4dc5b11/submissions/

 #include <stdio.h>

int main(){

    char str[1000000];

    scanf("%s", str);

    int c=0,i,flag=0;

    for( i=0;str[i]!='\0';i++)

    {

        if(str[i] > '6')

        {

            flag=1;

            break;

        }

        else if(str[i] == '6')

            continue;

        c++;

    }

    if(flag == 1 || str[i-1] == '6')

        printf("-1");     

    else

        printf("%d", c);

}