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  1. #include<stdio.h>
  2. #include<ctype.h>
  3.  
  4. int main(){
  5.     char prod[50];
  6.  
  7.     printf("Enter production (E->E+T): ");
  8.     scanf("%s",prod);
  9.  
  10.     if(isupper(prod[0]) && prod[1]=='-' && prod[2]=='>')
  11.         printf("Grammar is Context Free\n");
  12.     else
  13.         printf("Not a Context Free Grammar\n");
  14.  
  15.     return 0;
  16. }
Success #stdin #stdout 0s 5288KB
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stdin
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Standard input is empty
stdout
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Enter production (E->E+T): Not a Context Free Grammar
https://ideone.com/rt6T0X
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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