Compiler, Javacc

//#include "first.h" #include "string.h" #include "iostream.h" char G[5][7]= { "S->Ba", "A->aS", "A->BC", "C->@", "B->cAb" //@ = NULL }; char Vt[]= { "abc@" }; char Vn[]= { "SABC" }; char temp[30]=""; char t1=0; char j =3; ///isVn//////////////////////////// bool isVn(char temp , char* vn) { char *vn1 =vn; while(*vn) { if(temp==*vn++) { return true; } } return false ; } ///isVt//////////////////////////// bool isVt(char temp , char* vt) { char *vt1 = vt; while(*vt1) { if(temp==*vt1++) { return true; } } return false ; } ///isNull////////////////////////// bool isNull(char temp,const char g[5][7]) { for(int i=0 ; i < 5 ; i ++) { if(temp == g[i][0]) { for(int j =3 ; j < 7 ;j ++) { if (g[i][j] == '@') { return true; } } } } return false; } ///judge one char whether be in array?////////////////////////////////////////// bool isinarray(char t, const char* te) { while(*te) { if(t == *te++) return true; } return false; } ///first collective////////////////////////////////////////////////////////////// void zero() { memset(temp,0,30); t1 =0; j =3; } //save result; char* first(char g[5][7],char x,char* vn,char* vt) //"g[][]"on debug select given array;on release change to input; { ///////////////////////////// if(isVn(x,vn)) { for(int i=0;i<5;i++) { if(g[i][0]==x) { ///////////////vn one situation////////////// if(isVt(g[i][j],vt) ) { if(!isinarray(g[i][j],temp)) temp[t1++]=g[i][j]; } ///////////////vn two situation/////////////// else if(isVt(g[i] [j],vn)) { if(isNull(g[i][j],g)) { first(g,g[i][j],vn,vt); if(j<7) { first(g,g[i][j+1],vn,vt); } } else { first(g,g[i][j],vn,vt); } } } } return temp; } else if(isVt(x,vt)) { ///////////////vt situation////////////////// if(!isinarray(x,temp)) { temp[t1++]=x; } return temp; } else return "error"; }