#include <stdio.h> int main() { int m = 0; scanf("%d", &m); int MidNum = m * m; int i = 0; for (i = 0; i < m / 2; i++) //先打印左半边奇数 { printf("%d+", MidNum-2*(m/2-i)+((m+1)%2)); } if (1 == m % 2) //打印中间位置奇数 { if (1 == m) { printf("%d", MidNum); } else { printf("%d+", MidNum); } } for (i = ...