#include <stdio.h>
 
void cat_data( int *data1, const int *data2, int len2);
 
int main(void) {
 
	int data1[7]={1,2};
	int data2[5]={8,9,10,11,12};
 
	int l2=sizeof(data2)/sizeof(data2[0]);
 
	cat_data(data1,data2,l2);
 
	for(int i=0;i<7;i++){
		printf("data1[%d]=%d\n",i,data1[i]);
	}
 
	return 0;
}
 
void cat_data( int *data1, const int *data2, int len2){
	printf("%ld\n",sizeof(data1));
	printf("%ld\n",sizeof(data1[0]));
	int len1 =sizeof(data1)/sizeof(data1[0]);
	printf("%d\n",len1);
}
 
 

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