#include <stdio.h>

int areRowsValid(int m[][9]) {
    int r;
    for (r = 0; r < 9; r = r + 1) {
        int c, checklist[9] = {0};
        for (c = 0; c < 9; c = c + 1) {
            int digit = m[r][c];
            if (digit != 0) {
                if (checklist[digit - 1] == 0) {
                    checklist[digit - 1] = 1;
                }
                else {
                    return 0;
                }
            }
        }
    }
    return 1;
}

void printTestResult(int testNumber, int testResult) {
    if (testResult) {
        printf("Test %d is succesvol uitgevoerd.\n", testNumber);
    }
    else {
        printf("Test %d is NIET succesvol uitgevoerd!\n", testNumber);
    }
}

int main(void) {
    int puzzle1[9][9] = {
        {8 ,6 ,0 ,0 ,2 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,7 ,0 ,0 ,0 ,5 ,9},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,6 ,0 ,8 ,0 ,0},
        {0 ,4 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,5 ,3 ,0 ,0 ,0 ,0 ,7},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,2 ,0 ,0 ,0 ,0 ,6 ,0 ,0},
        {0 ,0 ,7 ,5 ,0 ,9 ,0 ,0 ,0}
    };
    int puzzle2[9][9] = {
        {8, 6, 3, 9, 2, 5, 7, 4, 1},
        {4, 1, 2, 7, 8, 6, 3, 5, 9},
        {7, 5, 9, 4, 1, 3, 2, 8, 6},
        {9, 7, 1, 2, 6, 4, 8, 3, 5},
        {3, 4, 6, 8, 5, 7, 9, 1, 2},
        {2, 8, 5, 3, 9, 1, 4, 6, 7},
        {1, 9, 8, 6, 3, 2, 5, 7, 4},
        {5, 2, 4, 1, 7, 8, 6, 9, 3},
        {6, 3, 7, 5, 4, 9, 1, 2, 8}
    };
    int puzzle3[9][9] = {
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0}
    };
    int puzzle4[9][9] = {
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {1 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,1},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0}
    };
    int puzzle5[9][9] = {
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {9 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,9},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0}
    };
    int puzzle6[9][9] = {
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {1 ,1 ,1 ,1 ,1 ,1 ,1 ,1 ,1},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0},
        {0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0}
    };
    
    printTestResult(1, areRowsValid(puzzle1) == 1);
    printTestResult(2, areRowsValid(puzzle2) == 1);
    printTestResult(3, areRowsValid(puzzle3) == 1);
    printTestResult(4, areRowsValid(puzzle4) == 0);
    printTestResult(5, areRowsValid(puzzle5) == 0);
    printTestResult(6, areRowsValid(puzzle6) == 0);

    getchar();
    return 0;
}