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Prolog program to read two strings and then output the third string which is a concatanation of the both excluding reapiting characters

Posted By: Milind Mishra     Category: Artificial Intelligence     Views: 3429

Write a complete prolog program to read two strings and then
output the third string which is a concatanation of the both
excluding reapiting characters for Example. if abd and dea
two strings, the output string must be abde.

Code for Prolog program to read two strings and then output the third string which is a concatanation of the both excluding reapiting characters in Artificial Intelligence

predicates
    start
    comp_str(string,string,string)
    comp_char(string,string,char,string)
goal
    clearwindow,
    start.
clauses
    start:-
        write("Enter first string = "),
        readln(Str1),nl,
        write("Enter second string = "),
        readln(Str2),nl,
        comp_str(Str1,Str2,Str3).

    comp_str(Str1,Str2,Str3):-
        Str2 <> "",
        frontchar(Str2,Char2,Rest2),
        comp_char(Str1,Str1,Char2,Str3),
        comp_str(Str3,Rest2,Str4).
    
    comp_str(Str1,Str2,Str3):-
        write("concat string = ",Str1).
        
    comp_char(Str1,TempStr1,Char2,Str3):-
        TempStr1 <> "",
        frontchar(TempStr1,Char1,Rest1),
        Char1 <> Char2,
        comp_char(Str1,Rest1,Char2,Str3).

    comp_char(Str1,TempStr1,Char2,Str3):-
        TempStr1 <> "",
        Str3 = Str1.

    comp_char(Str1,TempStr1,Char2,Str3):-
        str_char(Str2,Char2),
        concat(Str1,Str2,Str3).
  
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Milind Mishra
Milind Mishra author of Prolog program to read two strings and then output the third string which is a concatanation of the both excluding reapiting characters is from India.
 
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