C语言:5X5矩阵,右下角含主对角线各元素加10,左下角的元素都加5答:int main(){ unsigned int arr[5][5] = {{1,2,3,4,5},{6,7,8,9,10},{11,12,13,14,15},{16,17,18,19,20},{21,22,23,24,25}};for(int i = 0;i < 5;++i){ for(int j = 0;j < 5;++j){ printf("%d ",arr[i][j]);} printf("\n");} for(int i = ...