#include <stdio.h>
void cat_data(int *data1, int *data2, int len2) {
    int *p1 = data1,count = 0;
    for (int i = 0; i < 7; i++) {
        if (*(p1 + i) != 0) {
            count++;
        }
    }
    int remaining = 7 - count;
    int copy_len = (remaining < len2);
    int *insert_pos = data1 + count;
    int *p2 = data2;
 
 
    for (int i = 0; i < copy_len; i++) {
        *(insert_pos + i) = *(p2 + i);
    }
}
 
int main() {
    int data1[7] = {1, 2, 0, 0, 0, 0, 0};
    int data2[5] = {3,4, 5, 6, 7, };
 
    int len2 = 5;
 
 
    cat_data(data1, data2, len2);
 
 
    printf("連結後のdata1: ");
    int *p = data1;
    for (int i = 0; i < 7; i++) {
        printf("%d ", *(p + i));
    }
    printf("\n");
 
    return 0;
}
 

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