関連ワード:  write a program to join two strings    write a program to join two strings in java    write a program to concatenate two strings    write a program to concatenate two strings in python    write a program to concatenate two strings without using built in function    write a program to concatenate two strings without using library function    write a program to concatenate two strings using pointers    write a program to concatenate two strings without using standard library function    write a program to concatenate two strings using strcat () function    write a program to add two strings