c语言实现矩阵对角线相加

#define_CRT_SECURE_NO_WARNINGS

#include

#include

#define N 10

void main()

{

int a[N][N],sum=0;

for (int i = 0; i < N; i++)

{

for (int j = 0; j < N; j++)

{

a[i][j] = i*N + j + 1;

printf(" %-6d", a[i][j]);

}

printf("\n");

}

for (int k = 0; k < N; k++)

{

sum = sum + a[k][k];

}

printf("对角线上元素的和为%d\n", sum);

system("pause");

}