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代码#include <cstdlib>
#include <iostream>
using namespace std;
int main(int argc, char *argv[])
{
int m,n,r=0;
int cs=0;
char a[64][64]={{0}};
scanf("%d%d",&m,&n);
int num=0;
while(num<n*m){
switch(cs){
case 0:
for(int i=r;i<n-r;i++){
a[r][i]=(num++)%26+'A';
}
cs=1;
break;
case 1:
for(int i=r+1;i<m-r;i++){
a[i][n-r-1]=(num++)%26+'A';
}
cs=2;
break;
case 2:
for(int i=n-r-2;i>=r;i--){
a[m-r-1][i]=(num++)%26+'A';
}
cs=3;
break;
case 3:for(int i=m-r-2;i>r;i--){
a[i][r]=(num++)%26+'A';
}
cs=0;r++;
break;
}
}
for(int i=0;i<m;i++)
{
for(int j=0;j<n;j++){
printf(" %c",a[i][j]);
}
printf("\n");
}
system("PAUSE");
return EXIT_SUCCESS;
}
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