Write a calculation and output the sum of the diagonal elements of a 3*3 matrix.
Example of program running result:
Please enter the array elements: (3*3) ↙
1 2 3 4 5 6 7 8 9↙
↙The
array is: ↙
1 2 3↙
4 5 6↙
7 8 9↙
↙The
sum of the diagonals: ↙
25↙
Input prompt: "Please enter array elements: (3*3)\n"
Input format: "%d"
Output prompt: "\nThe array is:\n"
Output format: "%4d"
Output prompt: "\nYes Sum of angles:\n"
Output format: "%d\n"
#include<stdio.h>
int main()
{
int a[3][3],sum=0;
int i,j;
printf("请输入数组元素：（3*3）\n");
for(i=0;i<3;i++)
for(j=0;j<3;j++)
scanf("%d",&a[i][j]);
printf("\n数组为：\n");
for(i=0;i<3;i++)
for(j=0;j<3;j++)
{
printf("%4d",a[i][j]);
if(j==2)
{
printf("\n");
}
}
sum=(a[0][0]+a[1][1]+a[2][2]+a[0][2]+a[2][0]) ;
printf("\n对角线的和：\n");
printf("%d\n",sum);
}