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- //7_5
- #include <iostream.h>
- const int n=5;
- int sum(int a[][5], int size);
- void main()
- {
- int array[n][n]={{3,2,4,1,5},
- {8,7,2,5,6},
- {6,9,1,4,3},
- {5,5,3,6,2},
- {2,8,1,8,6}};
- cout <<sum(array,n);
- }
- int sum(int a[][5], int size)
- {
- int s=0;
- for(int i=0; i<size; i++)
- s+=a[i][i]+a[i][size-i-1];
- if(size%2==1)
- s-=a[size/2][size/2];
- return s;
- }