#include<stdio.h> #define N 15 main() { int i,j,row,cloum,size,square[N][N],count; clrscr(); printf("please enter the square size(odd && <=15):\n"); scanf("%d",&size); while(size%2==0||size>15||size<3) { printf("error due to the wrng input!please input it again!\n"); scanf("%d",&size); } for(i=0;i<size;i++)   for(j=0;j<size;j++)   square[i][j]=0; i=0;j=(size-1)/2; square[i][j]=1; for(count=2;count<=size*size;count++) { row=i-1<0?(size-1):(i-1); cloum=j-1<0?(size-1):(j-1); if(square[row][cloum]) i=(++i)%size; else {i=row; j=j-1<0?(size-1):(j-1); } square[i][j]=count; } printf("the %d square is:\n",size); for(i=0;i<size;i++)   { for(j=0;j<size;j++) printf("%d",square[i][j]); printf("\n"); } }

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