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What will be the output from YACC?

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E → number  | E '+' E    | E '×' E  

This grammar is fed to a YACC tool for parsing.

What will be the output for expression 3×2+1?

 

/* How to solve this? please explain*/
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Since you are not printing anything with the grammar, you can't expect an output.

Plus considering the precedence from left to right in any production of YACC.

3 will be parsed as "number" (because it has the highest precedence according to your production). Then "*" will be the next token for the compiler and it won't match any, resulting in an ERROR.
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