#defineROW5
#defineCOLUMN5
voidmain(){
intleft=0,right=COLUMN-1,top=0,bottom=ROW-1;
intf[ROW][COLUMN],i=0,j=0,num=1;
while(i>=top&&i<=?bottom?&&?j?>=left&&j<=?right)?{
????????//left->right
while(j<=?right)?{
????????????f[i][j++]?=?num++;
????????}
????????j--;
????????top++;
????????i++;
????????//top->bottom
while(i<=?bottom)?{
????????????f[i++][j]?=?num++;
????????}
????????i--;
????????right--;
????????j--;
????????//right->left
while(j>=left){
f[i][j--]=num++;
}
j++;
bottom--;
i--;
//bottom->top
while(i>=top){
f[i--][j]=num++;
}
i++;
left++;
j++;
}
}