c语言,求矩阵对角线元素的和,不知道哪里错了,求解答:修改后的程序及运行结果:include<stdio.h> include<math.h> include<stdlib.h> int main(void){ int *Matrix;int len,row,sum=0;scanf("%d",&len);Matrix=(int*)malloc(pow(len,2)*sizeof(int));int i,col;for(i=0; i<pow(len,2); i++){ scanf("%d",&Matrix[i]);} for(...