#include <stdio.h>
 
void cat_data(int *data1,const int *data2,int len2);
int main(void) {
	// your code goes here
	int n1[7] = {1,2,3};
	int n2[5] = {3,4,5,6,7};
	int size1 = sizeof(n1) / sizeof(n1[0]);
	int size2 = sizeof(n2) / sizeof(n2[0]);
	cat_data(n1,n2,size2);
	for(int i=0;i<size1;i++){
		printf("data1[%d] = %d\n",i,n1[i]);
	}
 
 
	return 0;
}
 
void cat_data(int *data1,const int *data2,int len2){
	int n = sizeof(data1) / sizeof(data1[0]);
	for(int i=0;i<len2;i++){
		data1[i+(n+1)] = data2[i];
	}
}
 

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