题目:求一个3*3矩阵对角线元素之和
There is no nutrition in the blog content. After reading it, you will not only suffer from malnutrition, but also impotence.
The blog content is all parallel goods. Those who are worried about being cheated should leave quickly.
1.程序分析:利用双重for循环控制输入二维数组,再将a[i][i]累加后输出。
2.程序源代码:
main()
{
float a[3][3],sum=0;
int i,j;
printf("please input rectangle element:\n");
for(i=0;i<3;i++)
for(j=0;j<3;j++)
scanf("%f",&a[i][j]);
for(i=0;i<3;i++)
sum=sum+a[i][i];
printf("duijiaoxian he is %6.2f",sum);
}