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  1. #include <stdio.h>
  2. void cat_data(int *data1, int *data2, int len2) {
  3.     int *p1 = data1,count = 0;
  4.     for (int i = 0; i < 7; i++) {
  5.         if (*(p1 + i) != 0) {
  6.             count++;
  7.         }
  8.     }
  9.     int remaining = 7 - count;
  10.     int copy_len = (remaining < len2);
  11.     int *insert_pos = data1 + count;
  12.     int *p2 = data2;
  13.  
  14.  
  15.     for (int i = 0; i < copy_len; i++) {
  16.         *(insert_pos + i) = *(p2 + i);
  17.     }
  18. }
  19.  
  20. int main() {
  21.     int data1[7] = {10, 20, 30, 0, 0, 0, 0};
  22.     int data2[5] = {40, 50, 60, 70, 80};
  23.  
  24.     int len2 = 5;
  25.  
  26.  
  27.     cat_data(data1, data2, len2);
  28.  
  29.  
  30.     printf("連結後のdata1: ");
  31.     int *p = data1;
  32.     for (int i = 0; i < 7; i++) {
  33.         printf("%d ", *(p + i));
  34.     }
  35.     printf("\n");
  36.  
  37.     return 0;
  38. }
  39.  
Success #stdin #stdout 0.01s 5304KB
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stdin
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Standard input is empty
stdout
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連結後のdata1: 10 20 30 40 0 0 0
https://ideone.com/TCKU4A
language:
C (gcc 8.3)
created:
5 days ago
visibility:
public

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