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  1. #include <stdio.h>
  2.  
  3. #define NMAX 10
  4.  
  5. int input(int *a, int *n);
  6. void output(int *a, int n);
  7. int max(int *a, int n);
  8. int min(int *a, int n);
  9. double mean(int *a, int n);
  10. double variance(int *a, int n);
  11.  
  12. void output_result(int max_v,
  13.                    int min_v,
  14.                    double mean_v,
  15.                    double variance_v);
  16.  
  17. int main() {
  18.     int n, data[NMAX];
  19.     if (input(data, &n)) {
  20.         output(data, n);
  21.          if (n > 0) {
  22.              output_result(max(data, n),
  23.                            min(data, n),
  24.                            mean(data, n),
  25.                            variance(data, n));
  26.  
  27.          } else {
  28.              printf("n/a\n");
  29.          }
  30.  
  31.     } else {
  32.         printf("n/a\n");
  33.     }
  34.  
  35.     return 0;
  36. }
  37.  
  38. int input(int *a, int *n) {
  39.     if (scanf("%d", n) != 1 || *n <= 0 || *n > NMAX) {
  40.         return 0;
  41.     }
  42.     for (int i = 0; i < *n; i++) {
  43.         if (scanf("%d", &a[i]) != 1) {
  44.             return 0;
  45.         }
  46.     }
  47.     return 1;
  48. }
  49.  
  50. void output(int *a, int n) {
  51.     if (n > 0) {
  52.       for (int i = 0; i < n; i++) {
  53.           printf("%d", a[i]);
  54.           if (i < n - 1) {
  55.               printf(" ");
  56.           }
  57.       }
  58.       printf("\n");
  59.     }
  60. }
  61.  
  62. int max(int *a, int n) {
  63.     int max_v = a[0];
  64.     for (int i = 1; i < n; i++) {
  65.         if (a[i] > max_v) {
  66.             max_v = a[i];
  67.         }
  68.     }
  69.     return max_v;
  70. }
  71.  
  72. int min(int *a, int n) {
  73.     int min_v = a[0];
  74.     for (int i = 1; i < n; i++) {
  75.         if (a[i] < min_v) {
  76.             min_v = a[i];
  77.         }
  78.     }
  79.     return min_v;
  80. }
  81.  
  82. double mean(int *a, int n) {
  83.     double sum = 0.0;
  84.     for (int i = 0; i < n; i++) {
  85.         sum += a[i];
  86.     }
  87.     return sum / n;
  88. }
  89.  
  90. double variance(int *a, int n) {
  91.     double avg = mean(a, n);
  92.     double sum_sq_diff = 0.0;
  93.     for (int i = 0; i < n; i++) {
  94.         sum_sq_diff += (a[i] - avg) * (a[i] - avg);
  95.     }
  96.     return sum_sq_diff / n;
  97. }
  98.  
  99. void output_result(int max_v,
  100.                    int min_v,
  101.                    double mean_v,
  102.                    double variance_v) {
  103.     printf("%d\n", max_v);
  104.     printf("%d\n", min_v);
  105.     printf("%.6f\n", mean_v);
  106.     printf("%.6f\n", variance_v);
  107. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/lCdow1
language:
C (clang 8.0)
created:
12 days ago
visibility:
public

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