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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <math.h>
  4.  
  5. #define MAX_LINES 10000
  6. #define THRESHOLD 3.0    // ピーク閾値 [V]
  7. #define MIN_DISTANCE 50  // 最小サンプル間隔
  8.  
  9. typedef struct {
  10.     double time;
  11.     double voltage;
  12. } DataPoint;
  13.  
  14. int main(void) {
  15.     DataPoint data[MAX_LINES];
  16.     int count = 0;
  17.  
  18.     // 標準入力(input欄)から「時刻, 電圧」を読み込み
  19.     while (count < MAX_LINES && scanf("%lf, %lf", &data[count].time, &data[count].voltage) == 2) {
  20.         count++;
  21.     }
  22.  
  23.     printf("--- 解析結果 ---\n");
  24.     printf("%-10s %-14s %-10s\n", "波形番号", "時刻[秒]", "電位[V]");
  25.     printf("------------------------------\n");
  26.  
  27.     int peak_index = 1;
  28.     int last_peak_sample = -MIN_DISTANCE;
  29.  
  30.     for (int i = 1; i < count - 1; i++) {
  31.         if (data[i].voltage > data[i-1].voltage && 
  32.             data[i].voltage >= data[i+1].voltage && 
  33.             data[i].voltage >= THRESHOLD) {
  34.  
  35.             if (i - last_peak_sample >= MIN_DISTANCE) {
  36.                 double v_rounded = round(data[i].voltage * 100.0) / 100.0;
  37.                 printf("%-10d %-14.2f %-10.2f\n", peak_index++, data[i].time, v_rounded);
  38.                 last_peak_sample = i;
  39.             }
  40.         }
  41.     }
  42.  
  43.     return 0;
  44. }
Success #stdin #stdout 0.01s 5320KB
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stdin
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stdout
copy 
--- 解析結果 ---
波形番号 時刻[秒]    電位[V] 
------------------------------
https://ideone.com/4H3bvE
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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