C语言向一维数组a[10]中输入10个数据：12，15，18，21，24，32，34，36，38，4

Question

C语言向一维数组a[10]中输入10个数据：12，15，18，21，24，32，34，36，38，40，求出这十个数据的平均值，并输入高于平均值的所有元素值及下标

Answer 1

#include <stdio.h>

int main()
{
    int a[10] = {12, 15, 18, 21, 24, 32, 34, 36, 38, 40};
    
    int sum = 0;
    for (int i = 0; i < 10; ++i)
        sum += a[i];
    
    float average = sum / 10.0;
    printf("Average: %f\n", average);
    
    printf("Index and number bigger than average:\n");
    for (int i = 0; i < 10; ++i)
        if (a[i] > average)
            printf("index %d, number %d\n", i, a[i]);
}


// Output 
Average: 27.000000                                                                                                                                                             
Index and number bigger than average:                                                                                                                                          
index 5, number 32                                                                                                                                                             
index 6, number 34                                                                                                                                                             
index 7, number 36                                                                                                                                                             
index 8, number 38                                                                                                                                                             
index 9, number 40