1 #include <string.h> 2 #include <stdio.h> 3 #include <stdlib.h> 4 char str[100]; 5 int c,num; 6 void E(); 7 void G(); 8 void T(); 9 void S(); 10 void F(); 11 int main() 12 { 13 scanf("%s",str); 14 E(); 15 if(str[c]=='#') 16 printf("accept "); 17 else 18 printf("error "); 19 return 0; 20 } 21 void E() 22 { 23 if(str[c]=='('||str[c]=='i') 24 { 25 printf("%d E-->TG ",num); 26 num++; 27 T(); 28 G(); 29 } 30 else 31 { 32 printf("error "); 33 exit(0); 34 } 35 } 36 37 void G() 38 { 39 if(str[c]=='+') 40 { 41 c++; 42 printf("%d G-->+TG ",num); 43 num++; 44 T(); 45 G(); 46 } 47 else 48 { 49 printf("%d G-->& ",num); 50 num++; 51 } 52 } 53 54 void T() 55 { 56 if(str[c]=='('||str[c]=='i') 57 { 58 printf("%d T-->FS ",num); 59 num++; 60 F(); 61 S(); 62 } 63 else 64 { 65 printf("error "); 66 exit(0); 67 } 68 } 69 void S() 70 { 71 if(str[c]=='*') 72 { 73 c++; 74 printf("%d S-->*FS ",num); 75 num++; 76 F(); 77 S(); 78 } 79 else 80 { 81 printf("%d S-->& ",num); 82 num++; 83 } 84 } 85 void F() 86 { 87 if(str[c]=='(') 88 { 89 c++; 90 printf("%d F-->(E) ",num); 91 num++; 92 E(); 93 if(str[c]==')') 94 { 95 c++; 96 } 97 else 98 { 99 printf("error "); 100 exit(0); 101 } 102 } 103 else if (str[c]=='i') 104 { 105 c++; 106 printf("%d F-->i ",num); 107 num++; 108 } 109 else 110 { 111 printf("error "); 112 exit(0); 113 } 114 }