Does left factoring for a grammar

this a source code for left factoring in complier design written in c language-this is a source code for left factoring in complier design written in c language...........

Elimination of left factoring in the given grammar For each nonterminal A find the longest prefix (alpha) common to two or more of its alternatives.If alpha is not equal epsilon,i.e..,there is a nontrivial common prefix,replace all the A productio