Outline. Tasks for Exercise Six. Exercise Six Goals. Task One: Kinetic Energy Table. Nested for Loops. Laboratory VI Program Control Using Loops

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1 Ercis 6 -- Loopig March 9, 6 Laboratory VI Program Cotrol Usig Loops Larry Cartto Computr Scic 6 Computig i Egirig ad Scic Outli Ercis si goals Outli tasks for rcis si Itroduc ida of std loops ad tabl gratio Provid dtails for som tasks March 9, 6 Ercis Si Goals As a rsult of this rcis you should b abl to accomplish th followig: writ loopig structurs usig both th whil ad for commads writ programs with std loops prpar a tabl of valus for a fuctio of two variabls writ a program to comput th sum of a ifiit sris 3 asks for Ercis Si O copy ad past cod to produc tabl of kitic rgy as a fuctio of mass ad vlocity wo modify task o cod to crat similar tabl for a diffrt formula hr writ cod with a whil loop to sum a ifiit sris for si() Four modify task thr cod to us a for loop i plac of a whil loop 4 ask O: Kitic Ergy abl KE mv / Copy ad cut cod from rcis Cod prits tabl of KE as a fuctio of mass, m, ad vlocity, V kg m 5 kg, with m kg 6 m/s V 5 m/s, with V m/s Modify this cod for task two 5 Nstd for Loops Ca hav a ir for loop std isid a outr for loop Eampl, prit tabl of kitic rgy such as th o blow Vlocity valus m/s blow Mass

2 Ercis 6 -- Loopig March 9, 6 Kitic Ergy abl Us std for loops Ir loop calculats ad prits o row of th tabl Outr loop dos ir loop for all rows Us typ it variabls for loop idics Covrt to doubl bfor divisio by Nd iitial loop to prit hadrs for ach colum O abl Row Each row prits a mass th prits th KE for ach vlocity from 6 to 5 What is loop id for pritig a row? cout << stw(3) << m; for( it v 6; // iitializ v < 5; // cotiu v++ ) // icrmt 7 8 Full Cod for O abl Row cout << stw(3) << m; for( it v ; from v prvious < ; chart v++ ) doubl KE doubl( m * v * v ) / ; cout << stw(7) << KE; How to Gt abl? Prit colum hadr row Loop ovr all valus of mass Mov output to a w li For ach valu of mass, us cod just dvlopd to prit o row Ed loop ovr mass 9 Cod to Produc abl // Put colum hadr cod hr for( it m ; m < ; m++ ) cout << dl; //Cod for o row cout << dl; ask O Cod for ( it V 6; V < 5; V++ ) // prit colum hadr with spacig for ( it m ; m < 5; m++ ) //row loop cout << "\m " << stw() << m; for ( it V 6; V < 5; V++ ) //cols doubl KE.5 * m * V * V; cout << stw(7) << KE;

3 Ercis 6 -- Loopig March 9, 6 ask wo: abl of A/P Ratio A P i ( + i).5 ( +.5).843 Formula Eampl for i.5%, Modify task o cod to prpar tabl of rcurrig paymt ratio, A/P Fuctio of itrst rat, i, ad priods,.5% i %, with i.5% 6 36, with 6 3 Loop trmiatio problms Numbrs ar ot rprstd actly i th computr Cod lik th followig may ot giv corrct d poit du to roudoff rror for ( doubl i.; i <.; i +.5) Suggstd altrativs for ( doubl i.; i <.; i +.5) for ( it cout ; cout < 8; cout++) doubl i. +.5 * cout; Could hav i. 4 Othr ask wo Issus Spacig for output Which is i rows ad which is i colums? (Hit: what will fit?) Gttig colum hadrs to li up with umbrs i colums Not iitial spacig i colum hadr providd i iitial cout statmt as blak strig, 5 cout << " abl of Kitic << " Masss, m, i kilograms ad << "V, i mtrs pr scod.\\" << " " << fid << stprcisio(); for ( it vlocity 6; vlocity <5; vlocity++ ) if ( vlocity < ) // adjust format cout << " V " << vlocity; // spacs bfor V ls cout << " V " << vlocity; V // spac bfor V asks hr ad Four Writ cod to valuat ifiit sris for si of a agl, Do this usig both a for loop ad a whil loop For larg agls, comput th si of a quivalt agl btw ad π S rcis for mor dtails o computatio of ifiit sris for ad modificatio of this cod to comput si 7 si( ) - Equivalt Agls πn y Si has priod of π so w ca comput th si of a larg agl, y, as si of y πn, whr N it(/π) 8 3

4 Ercis 6 -- Loopig March 9, 6 Ifiit Sris for Ratio of rms i Sris! ( )( ) L(3)()()! ( )! ( -)( - ) L(3)()()!! ( )! or ( )!!!! ( )!! ( )! ad! ( )! L L!!!! 3! 6 9!! ( )! ( )! ( )!! ( )!! Codig th Sris whr ad Cod for this approach wrm oldrm * / ; srissum srissum + wrm oldrm wrm; Altrativ Codig for Sris Cod from last pag wrm oldrm * / ; srissum srissum + wrm oldrm wrm; Simplr Cod uss o trm variabl trm trm * / ; sum sum + trm; Still Simplr Cod trm * / ; sum + trm; Must iitializ sum ad trm proprly Startig th Loop cost it man ; cost doubl maerror -; bool covrgd fals; doubl trm ; // chag this! doubl sum trm; it ; whil (!covrgd && < man) // s t slid Loop Body whil (!covrgd && < man) ++; trm * / ; sum + trm; covrgd fabs( trm ) < maerror * fabs( sum ); 3 4 4

5 Ercis 6 -- Loopig March 9, 6 Why did w it th loop? if ( covrgd ) cout << For << <<, p() << sum; ls cout << No Covrgc ; Si Sris ( ) si() + L ( + )! 3! 5! + ( ) ( + )! ( ) ( ) + ( ) ( ) [( ) + ]! + ( )! ( + )! ( + ) Similar, but mor complicatd, tha First trm i sris is, ot 5 6 Usig a for Loop Cotiuatio coditio ca b compl Rmmbr whil coditio for sris whil (!covrgd && < man) Ca hav similar coditio i for loop Ca also hav multipl iitializatios or coditios sparatd by a comma for (, covrgd fals;!covrgd && < man; ++ ) Watch first valu ad icrmt 7 Styl: Idt Structurs whil ( ifil.good() ) ifil << hours << rat; if ( hours > 4 ) pay rat * ( * ( hours 4 ) ); ls pay rat * hours; outfil << pay << dl; 8 Bad Styl whil(ifil.good())ifil<<hours<< rat;if(hours>4)payrat*(4+.5*( hours 4));ls payrat*hours; outfil<<pay<<dl; 9 5