(b) parallel array first_name [] and last_name [], respectively. The program should concatenates a copy of last_name to the first_name for all elements and display first_name with the number of...

Extracted text: (b) parallel array first_name [] and last_name [], respectively. The program should concatenates a copy of last_name to the first_name for all elements and display first_name with the number of character contains in the array. Complete the program (line 17-19). program in Figure 1(c) read input of first name and last name for 3 users and store in 1. #include 2. #include 3. 4. int main() 5. { 6. int name_length[3]={ 0}; 7. char first_name[3] [50]={0},last_name[3][50]={0}; 8. int i; 9. 10. for (i=0;i<3;i++) 11.="" {="" 12.="" printf("please="" enter="" first="" name:="" ");="" 13.="" gets="" (first_name="" [i]);="" 14.="" printf("please="" enter="" last="" name:="" ");="" 15.="" gets="" (last_name[i]);="" 16.="" }="" 17.="" repeat="" for="" all="" element="" in="" the="" array="" 18.="" appends="" a="" copy="" of="" last="" name="" to="" the="" first="" name="" using="" built="" in="" string="" function="" 19.="" display="" the="" first="" name="" and="" character="" length="" 20.="" return="" 0;="" 21.="" }="" figure="">