1024: C语言程序设计教程（第三版）课后习题7.3

 1 #include <stdio.h>
 2 
 3 int main(int argc, char const *argv[])
 4 {
 5     int a[3][3], i, j;
 6     int diagonal1 = 0, diagonal2 = 0;
 7 
 8     // input
 9     for(i = 0; i < 3; i++)
10     {
11         for(j = 0; j < 3; j++)
12         {
13             scanf("%d", &a[i][j]);
14         }
15     }
16 
17     diagonal1 = a[0][0] + a[1][1] +a[2][2];
18     diagonal2 = a[2][0] + a[1][1] +a[0][2];
19 
20     printf("%d %d\n", diagonal1, diagonal2);
21 
22     return 0;
23 }