#include <stdio.h>
 
void cat_data(int* data1, const int* data2, int len2){
 
    while(*(data1) != 0){
        data1++;
    }
    while(len2--){
        *data1 = *data2;
        data1++;
        data2++;
    }
 
 
 
}
int main(){
    int data1[7] = { 11,22,44};
    int data2[5] = {3,4,5,6,7};
 
    cat_data(data1, data2, sizeof(data2)/sizeof(int));
 
    for(int i = 0; i < 7; i++){
        printf("data1[%d] = %d \n", i,data1[i]);
    }
    return 0;
}
 

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