为啥是M不是n
#include <stdio.h>
#define M 5
/************found************/
int fun(int n, int xx[][M])
{ int i, j, sum=0;
printf( "\nThe %d x %d matrix:\n",M,M);
for( i = 0; i < M; i++ )
{ for( j = 0; j < M; j++ )
/************found************/fun函数定义的形参形式不是n吗。是不是因为M是常量,n是变量才弄得M
printf( "%d ", xx[i][j] );
printf("\n");
}
for( i = 0 ; i < n ; i++ )
sum += xx[i][i]+xx[i][ n-i-1 ];
return( sum );
}
main( )
{ int aa[M][M]={{1,2,3,4,5},{4,3,2,1,0},
{6,7,8,9,0},{9,8,7,6,5},{3,4,5,6,7}};
printf ( "\nThe sum of all elements on 2 diagnals is %d.",fun( M, aa ));
}