Cifafenxi.rar_cifa

#include <stdio.h> #include <ctype.h> #include <string.h> char *nexttoken(); char nextchar(); void next(); void back(); char *gettoken(); char cbuf[]="12.3*********klj12.2e2jj778"; int forward=-1; int main(){ while(1){ printf("%s\n",nexttoken()); if (forward >=strlen(cbuf)-1){ getchar(); return 0; } } } int state; int start; char *nexttoken(){ char c; state =12; while(1){ switch(state){ case 12: c=nextchar(); start=forward; if(isdigit(c)){ state=13; }else { next(); } break; case 13: c=nextchar(); if(isdigit(c)) state=13; else if(c=='e'||c=='E') state=16; else if(c=='.') state=14; else state=19; break; case 14: c=nextchar(); if(isdigit(c)) state=15; break; case 15: c=nextchar(); if(isdigit(c)) state=15; else if(c=='e'||c=='E') state=16; else state=19; break; case 16: c=nextchar(); if(isdigit(c)) state=18; else if(c=='+'||c=='-') state=17; break; case 17: c=nextchar(); if(isdigit(c)) state=18; break; case 18: c=nextchar(); if(isdigit(c)) state=18; else state=19; break; case 19: back(); return gettoken(); } } } char nextchar(){ forward++; return cbuf[forward]; } void back(){ forward--; } void next(){ forward++; } char token_buf[128]; char *gettoken(){ int i,j=0; for(i=start;i<=forward;i++){ token_buf[j++]=cbuf[i]; } token_buf[j]='\0'; return token_buf; }