#include <stdio.h>
#include <math.h>

#define NINNZUU 4
#define KAMOKU 5

int main(void)
{
    char subject[KAMOKU][10] = {"国語", "算数", "理科", "社会", "英語"};
    char name[NINNZUU][20] = {"A", "B", "C", "D"};
    double hennsati[NINNZUU][KAMOKU], hyoujunnhennsa[KAMOKU], heikinn[KAMOKU];
    int i, n;
    int goukei;
    int score[NINNZUU][KAMOKU] = {{55, 79, 83, 31, 98},
                    {99, 0, 48, 80, 100},
                    {78, 80, 75, 89, 30},
                    {12, 50, 70, 90, 100}};
    
/* ----------------------------計算をする部分-------------------------------- */
    
    for(n = 0; n < KAMOKU; n++){
        /* 各科目の平均点を求めて配列に入れる    */
        goukei = 0;
        for(i = 0; i < NINNZUU; i++){
            goukei = goukei + score[i][n];
        }
        heikinn[n] = goukei / NINNZUU;
        
        /* 各科目の標準偏差を求めて配列に入れる    */
        goukei = 0;
        for(i = 0; i < NINNZUU; i++){
            goukei = goukei + (score[i][n] - heikinn[n])
                     * (score[i][n] - heikinn[n]);
        }
        hyoujunnhennsa[n] = sqrt(goukei / NINNZUU);
        
        /* 偏差値を求めて配列に入れる    */
        for(i = 0; i < NINNZUU; i++)
            hennsati[i][n] = (score[i][n] - heikinn[n])
                         / hyoujunnhennsa[n] * 10 + 50;
    }
    
/*---------------------------表示をする部分---------------------------------- */
    
    /* 各科目の平均点と標準偏差を表示    */
    for(n = 0; n < KAMOKU; n++){
        printf("%s| 平均点: %.1f 点\t標準偏差: %.1f\n"
            , subject[n], heikinn[n], hyoujunnhennsa[n]);
    }
    printf("\n");
    
    /* 表の題名を表示    */
    printf("偏差値\n");
    
    /* 科目名を表示    */
    printf("\t");
    for(n = 0; n < KAMOKU; n++){
        printf("  %s", subject[n]);
    }
    printf("\n");
    
    /* 個人の偏差値を表示    */
    for(i = 0; i < NINNZUU; i++){
        printf("   %s | ", name[i]);
        for(n = 0; n < KAMOKU; n++){
            printf("  %.1f", hennsati[i][n]);
        }
        printf("\n");
    }
    
    return 0;
}