#include <stdio.h>
 
void cat_data( int *data1, const int *data2, int len2);
 
int main(void) {
	int a[7] = {2,3};
	int b[5] = {5,7,11,13,17};
	int l = sizeof(b)/sizeof(b[0]);
 
	cat_data(a, b, l);		
 
	for(int i = 0; i < 7; i++){
		printf("%d ",a[i]);
	}
	return 0;
}
 
void cat_data( int *data1, const int *data2, int len2){
	int i = 0, n = 0;
 
	while (data1[i] != 0){
		i++;
	}
	int len3= len2 + i + 1;
 
	for(i + 1; i < len3; i++){
		data1[i] = data2[n];
		n++;
	}
}

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