题目1001：A+B for Matrices

题目描述：

    This time, you are supposed to find A+B where A and B are two matrices, and then count the number of zero rows and columns.

输入：

    The input consists of several test cases, each starts with a pair of positive integers M and N (≤10) which are the number of rows and columns of the matrices, respectively. Then 2*M lines follow, each contains N integers in [-100, 100], separated by a space. The first M lines correspond to the elements of A and the second M lines to that of B.

    The input is terminated by a zero M and that case must NOT be processed.

输出：

    For each test case you should output in one line the total number of zero rows and columns of A+B.

样例输入：

2 21 11 1-1 -110 92 31 2 34 5 6-1 -2 -3-4 -5 -60

样例输出：

15

来源：

2011年浙江大学计算机及软件工程研究生机试真题

解析：  题目意思为求矩阵行全为0或列全为0的行数和列数。

code：

#include <iostream>#include <stdio.h>using namespace std;int main(){   int a[100][100]={0},b[100][100]={0},c[100][100]={0},n,m,i,j,k,l;   while(cin>>n>>m && n!=0)   {          // memset(a,0,sizeof(a));      //  memset(b,0,sizeof(b));    //     memset(c,0,sizeof(c));        for(i=0;i<n;i++)           for(j=0;j<m;j++)              cin>>a[i][j];               for(i=0;i<n;i++)           for(j=0;j<m;j++)              cin>>b[i][j];               for(i=0;i<n;i++)           for(j=0;j<m;j++)              c[i][j]=a[i][j]+b[i][j];                        l=1;k=0;              for(i=0;i<n;i++)              {                     l=1;                 for(j=0;j<m;j++)                  {                      if(c[i][j]!=0)                        { l=0; break;}                                                     }                  if(l==1)                    k++;                                             }              l=1;           for(j=0;j<m;j++)              {                   l=1;              for(i=0;i<n;i++)                 {                      if(c[i][j]!=0)                        { l=0; break;}                                         }                  if(l==1)                    k++;                 }             cout<<k<<endl;        }       // system("pause");        return 0;    }