井字棋判断输赢C

#include <stdio.h>

int main(){
    char a[3][3];
    for (int i = 0; i < 3; ++i) {
        for (int j = 0; j < 3; ++j) {
            scanf("%c",&a[i][j]);
            getchar();
        }
    //    scanf("\n");
    }
    for (int i = 0; i < 3; ++i) {
        for (int j = 0; j < 3; ++j) {
            printf("%c ",a[i][j]);
        }
        printf("\n");
    }

    int countX = 0,countO = 0;

    for (int i = 0; i < 3; ++i) {
        countO = countX = 0;
        for (int j = 0; j < 3; ++j) {
            if(a[i][j] == '*'){
                countX++;
            }else if(a[i][j] == 'O'){
                countO++;
            }
        }
   //     printf("%d %d\n",countX,countO);
  //      printf("first\n");
        if(countO == 3){
            printf("O win\n");
            return 0;
        }else if (countX == 3){
            printf("X win\n");
            return 0;
        }
    }

    for (int i = 0; i < 3; ++i) {
        countO = countX = 0;
        for (int j = 0; j < 3; ++j) {
            if(a[j][i] == '*'){
                countX++;
            }else if(a[j][i] == 'O'){
                countO++;
            }
        }
  //      printf("second\n");
  //      printf("%d %d\n",countX,countO);
        if(countO == 3){
            printf("O win\n");
            return 0;
        }else if (countX == 3){
            printf("X win\n");
            return 0;
        }
    }

    for (int i = 0,countO = countX = 0; i < 3; ++i) {
        if(a[i][i] == '*'){
            countX++;
        }else if(a[i][i] == 'O'){
            countO++;
        }
 //       printf("third\n");
 //       printf("%d %d\n",countX,countO);
        if(countO == 3){
            printf("O win\n");
            return 0;
        }else if (countX == 3){
            printf("X win\n");
            return 0;
        }
    }

    for (int i = 0,countO = countX = 0; i < 3; ++i) {
        if(a[i][2-i] == '*'){
            countX++;
        }else if(a[i][2-i] == 'O'){
            countO++;
        }
  //      printf("fourth\n");
   //     printf("%d %d\n",countX,countO);
        if(countO == 3){
            printf("O win\n");
            return 0;
        }else if (countX == 3){
            printf("X win\n");
            return 0;
        }
    }

    return 0;
}