#include <stdio.h>
void cat_data(int*data1,const int*data2,int len2,int len1){
for (int i=0; i<len2 && (len1+1) <7;i++){
  data1[i+len1]=data2[i]; }
}
int main(void) {
  int data1[7]={1,0,2};
  int data2[5]={3,4,5,6,7};
  int len2 =5;
  int len1 =3;
  cat_data(data1,data2,len2,len1);
  for (int i=0;i<7;i++){
  printf("data1[%d] = %d\n",i,data1[i]);}
	// your code goes here
	return 0;
}