Question

编程实现：求二维数组a[3][3]={1,2,3,4,5,6,7,8,9}的各行元素的和

Answer 1

写了一个，请参考。
#include<stdio.h>

int main()
{
int a[3][3]={1,2,3,4,5,6,7,8,9};
int i = 0, j = 0, sum = 0;

for(i = 0; i < 3; i++)
{
sum = 0;
for(j = 0; j < 3; j++)
{
sum += a[i][j];
}
printf("第%d行的和：%d\n", i, sum);
}

return 0;
}

Answer 2

void main()
{
int a[3][3]={1,2,3,4,5,6,7,8,9};
int i,j;
int sum[3]={0,0,0};
for(i=0;i<3;i++)
for(j=0;j<3;j++)
sum[i]+=a[i][j];
printf("sum:%d %d %d",sum[0],sum[1],sum[2]);
}