1 = input ( ) . 5 =0 * if ( no 10 ) return . 10 00 ~ O MID W NH while ( NO] [ if ( s) 10) [ while ( NO ) [ 5 =5 - 11* 11 = 11 - 1* 10 . 1 1 . break ....

Please I need to know how to Construct CFG and PDG for the following program

1 = input ( ) .5 =0 *if ( no 10 )return .10 00 ~ O MID W NHwhile ( NO] [if ( s) 10) [while ( NO ) [5 =5 - 11*11 = 11 - 1*10 .1 1 .break .12 .13 .5 = 5+ 2 .14 .DI = ]1 - 1 .15 .16 .if ( s)0 &``17 .5% 2 = =0) [18 .5 = 5 +1 .19 .