C语言实现矩阵翻转(上下翻转、左右翻转)

#include <stdio.h>   void matrix (int m, int n, int t) {   int arr[m][n];   int i, j, k;     for (i = 0; i < m; i++){     for (j = 0; j < n; j++){       scanf("%d", &arr[i][j]);     }   }   if (t == 0){//左右翻转       for (i = 0; i < m; i++){         for (j = n-1; j >= 0; j--){           if ( j == 0 ) {             printf("%d", arr[i][j]);           }           else {             printf("%d ", arr[i][j]);           }         }         printf("/n");       }   }   else if (t == 1){//上下翻转     for (i = m-1; i >= 0; i--){       for (j = 0; j < n; j++){         if ( j == n - 1 ) {           printf("%d", arr[i][j]);         }         else {           printf("%d ", arr[i][j]);         }       }       printf("/n");     }   } }   int main() {   int m, n, t;     scanf("%d %d %d", &m, &n, &t);   matrix (m, n, t);     return 0; } 

void matrix (int m, int n, int t) {   int i, j;   int **arr=(int**)malloc(m*sizeof(int*));   for(i = 0; i < m; i++)   {     arr[i] = (int*)malloc(n * sizeof(int));     for(j = 0; j < n;j++)     {       scanf("%d", &arr[i][j]);     }   }   /*   int **arr = new int*[m];   for(i=0;i<m;i++)   {     arr[i] = new int[n];     for(j=0;j<n;j++)     {       scanf("%d", &arr[i][j]);     }   }   */   if (t == 0){//左右翻转       for (i = 0; i < m; i++){         for (j = n-1; j >= 0; j--){           if ( j == 0 ) {             printf("%d", arr[i][j]);           }           else {             printf("%d ", arr[i][j]);           }         }         printf("/n");       }   }   else if (t == 1){//上下翻转     for (i = m-1; i >= 0; i--){       for (j = 0; j < n; j++){         if ( j == n - 1 ) {           printf("%d", arr[i][j]);         }         else {           printf("%d ", arr[i][j]);         }       }       printf("/n");     }   } }