Question

题目:输入一个m*n整型的二维数组,对其每行求和,和单独存放在一个一维数组中。

Answer 1

#include<stdio.h>
int main(){
int *a,*b;
int m,n,i,j;
printf("input m n:\n");
scanf("%d %d",&m,&n);
a = (int *)malloc(sizeof(int)*m*n);
b = (int *)malloc(sizeof(int)*m);
printf("input the array in row order:\n");
for (i=0;i<m*n;i++)scanf("%d",&a[i]);
for (j=0;j<m;j++){
b[j]=0;
for (i=0;i<n;i++) b[j]=b[j]+a[j*n+i];
};
printf("==================\n");
for (j=0;j<m;j++)printf("%d ",b[j]);
return 0;
}
例子：
input m n:
3 4
input the array in row order:
11 12 13 14
21 22 23 24
31 32 33 34
==================
50 90 130