c语言练习 二维数组 年平均降水量 月平均降水量

#define YEARS 5
#define MONTHES 12

int main(void)
{

    const float rain[YEARS][MONTHES] = 
    {
        {4.3,4.3,4.3,3.0,2.0,1.2,0.2,0.2,0.4,2.4,3.5,6.6},
        {8.5,8.2,1.2,1.6,2.4,0.0,5.2,0.9,0.3,0.9,1.4,7.3},
        {9.1,8.5,6.7,4.3,2.1,0.8,0.2,0.2,1.1,2.3,6.1,8.4},
        {7.2,9.9,8.4,3.3,1.2,0.8,0.4,0.0,0.6,1.7,4.3,6.2},
        {7.6,5.6,3.8,2.8,3.8,0.2,0.0,0.0,0.0,1.3,2.6,5.2}
    };
    
    float rain_year=0;
    int i;
    int j;
    float rain_month = 0;
    for (i = 0; i < YEARS; i++)
    {
        for (j = 0; j < MONTHES; j++)
        {
            rain_year = rain_year + rain[i][j];

        }
        printf("sum rain of year %d is %.1f,average rain is %.1f
", i + 1,rain_year,rain_year/MONTHES);
        rain_year = 0;
    }
    
    for (j = 0; j < MONTHES; j++)
    {

        for (i = 0; i < YEARS; i++)
        {
            rain_month = rain_month + rain[i][j];
            

        }
        printf("%d month rain is %.1f
", j + 1, rain_month/YEARS);
    }

    return 1;

感想：二维数组总是感觉没有那么一维数组直观，写起来比较费脑子，要多写啊。