Pure C language Writing puzzle game

#include <stdio.h> #include <stdlib.h> #include <time.h> #include <conio.h> int step=0;  void map ()//Game menu function.      {printf ("▇▇▇▇▇▇▇▇▇▇▇▇▇▇\n");      printf ("█ jigsaw puzzle game █\n");   printf ("█1.      3x3█\n ");   printf ("█2.      4x4█\n ");   printf ("█3.      5x5█\n ");   printf ("█4.      Exit █\n ");  printf ("▇▇▇▇▇▇▇▇▇▇▇▇▇▇\n");      } void Fun (int *a,int t,int m,int r) {int i;            int g;              for (i=0;i<m;i++) {if (i%r== (r-1) && (i+t)%r==0)//Let the array not be converted across rows.          Continue          if (i%r==0&& (i+t)%r== (r-1)) continue;              if (a[i+t]==0 && (i+t) >=0 && (i+t) <m) {g=a[i];              A[I]=A[I+T];              a[i+t]=g;              step++;          return;      }}} void Move (int *a,int m,int R) {///up or down move function.      Char ch;            int i,j; WhilE (Ch=getch ()) {System ("CLS");              if (ch== ' W ') {i=-r;          Fun (A,I,M,R);              } else if (ch== ' s ') {i=r;          Fun (A,I,M,R);              } else if (ch== ' a ') {i=-1;          Fun (A,I,M,R);              } else if (ch== ' d ') {i=1;          Fun (A,I,M,R); } else if (ch== ' 4 ') {printf ("You have quit the game, please play again!")              \ n ");          Exit (0);              } for (i=0;i<m;i++) {if (a[i]==0) printf ("");              else printf ("%2d", A[i]);          if ((i+1)%r==0) Putchar (10);      } printf ("Total walk:%d steps!\n", step);      }} void map_x (int m,int r) {int i=1,j,a[25],n;      Srand (Time (NULL));      printf ("Jigsaw game begins: \ n");          while (i<m) {N=1+rand ()% (m-1); for (j=1;j<i;j++) {              if (N==a[j]) break;              } if (j==i) {a[i]=n;          i++;      }} a[0]=0;          for (i=0;i<m;i++) {if (a[i]==0) printf ("");          else printf ("%2d", A[i]);      if ((i+1)%r==0) Putchar (10);      } printf ("Total walk:%d steps!\n", step);  Move (A,M,R);      } int main () {int i,n;      Char ch;      Map ();//Display menu.      printf ("Please select the level of the game you are playing: \ n");      Ch=getch ();          while (ch!= ' 1 ' && ch!= ' 2 ' && ch!= ' 3 ' &&ch!= ' 4 ') {printf ("input wrong, please re-enter: \ n");      Ch=getch ();              } switch (CH) {case ' 1 ': map_x (9,3);           Break              Case ' 2 ': map_x (16,4);          Break              Case ' 3 ': map_x (25,5);          Break Case ' 4 ': printf ("You have quit the game, please play again!")              \ n ");              Exit (0);      Break   }   return 0;   }

Pure C language Writing puzzle game