Hello
I asked to write a program works as parser This program implements an interpreter in the C language,which will read a sentence at atime from the user and print :Good:<n> words when the input noun phrase is grammatically correct,and <n> is the total number of words in the phrase.If the input is grammatically incorrect,it will print :Bad phrase to the user.
The sentence is correct(according to this program) if it contains
1.article(a,the)
2.adjective {hungry,black,white , thirsty}
3.noun {cat,dog}
the sentence may contain more than one objective or no objective at all and the program must contain the foolowing function getnexttoken(); noun_phrase();
article(); noun();
example:
input output
The cat Good<2>words
The black dog. Good<3>words
The white hungry cat. Good<4>words
a hungry Bad phrase
my code has many problems which i could not solve them .
,so,help me pleeeeeeease !!!!!!
Code:#nclude<stdio.h> #nclude<conio.h> #include<ctype.h> typedef char* token_t ; typedef token_t* token; int get_next_token(); int article (token str); int adjective(token str); int noun(token str); int count=0 ; //-------------------------------------------------------------------------// void main() {int y; y=get_next_token(); if(y==0) printf("BAD PHRASE \n"); else printf("GOOD PHRASE %d",count); } //-----------------------------------------------------------------------// int get_next_token() { token string[30]; token str1[10],str2[10],str3[10]; int i=0,j=0,k=0,x,y,z; printf("Enter the sentence\n"); scanf("%s",string); while(isspace(string[i])) { str1[i]=string[i] ; i++; } count++; x=article(str1); if(x==0) return(0); else { i++; while(!(isspace(string[i]))) { str2[j]=string[i]; i++; j++; } count++; y=adjective(str2); while(y!=0) { i++; while(!(isspace(string[i]))) { str3[k]=string[i]; i++; k++; } count++; y=adjective(str3); } z=noun(str3); if(z==1) return(1); else return(0); } //------------------------------------------------------------------------------// /* article() */ int article (token str) { if(str=="The" || str== "a") return(1); else return(0); } //----------------------------------------------------------------------------// /* adjective() */ int adjective(token str) { if(str=="white" || str=="hungry" || str=="black" || str=="thirsty") return (1); else return (0); } /---------------------------------------------------------------------------/ /* noun() */ int noun(token str) { if(str=="cat"|| str=="dog") return(1); else return(0); }
[code][/code]tagged by Salem
