A.When the ecological balance of the river is lost. B.When people consume more fish than they used to. C.When large numbers of algae, fish and birds are killed. D.When the production of marine petroleum is increased.
【简答题】求矩阵各行元素之和 本题要求编写程序,求一个给定的 m × n 矩阵各行元素之和。 输入格式: 输入第一行给出两个 m 和 n ( 1 ≤ m , n ≤ 6 )。随后 m 行,每行给出 n 个整数,其间 以空格分隔。 输出格式: 每行输出对应矩阵行元素之和。 输入样例: 3 2
6 3
1 -8
3 12 输出样例: 9
-7
15