#include <stdio.h>
void cat_data(int *data1, const int *data2, int len2);
 
void cat_data(int *data1, const int *data2, int len2)
{
	int a = 2;
	for(int i=0; i<len2; i++){
		data1[a + i] = data2[i];
	}
}
 
int main(void)
{
	int data1[7];
	data1[0] = 1;
	data1[1] = 2;
 
	int data2[5] = {3,4,5,6,7};
	int len2 = sizeof(data2) / sizeof(data2[0]);
 
	cat_data(data1, data2, len2);
 
	for(int i=0; i<7; i++){
		printf("data1[%d] = %d\n", i, data1[i]);
	}
 
	return 0;
}
 

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