While-CFG FIRST FOLLOW SET AND OP-PREC-TABLE IN C

Automating the process of finding leading/trailing set from a simple hardcoded While loop CFG in C and generating an operator precedence table from the sets. This is a very basic implementation in C.

The Context Free grammar

S->w(C)bAe 
O->p 
C->iOn 
C->iOi 
A->L;A 
A->f 
L->i=E 
E->T*F
T->i
F->n

What does the symbols represent?

• S is the start state
• w represents while keyword
• p represents conditional operators like ==,<=,=>,!=
• b represents begin
• A represents the statements
• e represents the end of the while loop
• C represents a condition
• i represents an identifier
• n represents a constant
• L represents an assignment
• E represents an operation of an identifier and a constant