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実数を降順に並べ、平均値以上の値を表示するプログラム
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/** | |
* @file q11175050116.c | |
* @brief 実数を降順に並べ、平均値以上の値を表示するプログラム | |
* @author Keitetsu | |
* @date 2017/06/10 | |
* @copyright Copyright (c) 2017 Keitetsu | |
*/ | |
#include <stdio.h> | |
#define X_NUM 10 /**< 入力値の数 */ | |
int main(void) | |
{ | |
double x[X_NUM], total, average, tmp; | |
int i, j; | |
/* 入力値格納と合計値算出 */ | |
total = 0.0; | |
for (i = 0; i < X_NUM; i++) { | |
printf("x[%d] = ", i); | |
scanf("%lf", &x[i]); | |
total += x[i]; | |
} | |
/* 平均値算出 */ | |
average = total / X_NUM; | |
printf("平均値 = %f\n", average); | |
/* 降順ソート */ | |
for (i = 0; i < (X_NUM - 1); i++) { | |
for (j = i + 1; j < X_NUM; j++) { | |
if (x[i] < x[j]) { /* x[i]がx[j]よりも小さい場合 */ | |
tmp = x[i]; /* x[i]とx[j]をスワップ */ | |
x[i] = x[j]; | |
x[j] = tmp; | |
} | |
} | |
} | |
/* 平均値以上の値を降順表示 */ | |
printf("平均値以上の入力値\n"); | |
for (i = 0; i < X_NUM; i++) { | |
if (x[i] >= average) { /* x[i]が平均値以上の場合 */ | |
printf("x[%d] = %f\n", i, x[i]); | |
} | |
} | |
return 0; | |
} |
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