So i have here a program which is Rental System for a cafe/computer shop.

But i don't know how to do this in flow chart. Can someone help me about this stuff?

Or atleast give me an idea. I have do while.

Code:#define p printf #define g gotoxy #define s scanf #include<stdio.h> /*this variable uses to the calculation of each and every hour and minutes*/ int yes,half,hail,lombey,rental,addm,addh,m22,hr22,amount1,wholeg,wholei,wholesc,wholelc,wholeslb,print,g15,i10,hr1,m1,hr2,m2,hour,minute,amount,sc,lc,slb,total,nump1,nump2,nump3; /*for do while variable*/ char answer; main() { /*if set to yes the it starts again to the very start of the program*/ lombey: clrscr(); g(18,5);p("WELCOME TO OUR COMPUTER RENTAL SYSTEM!"); g(20,8);p("BROUGHT TO YOU BY JAYLORD AND RHEM"); g(18,13);p("Would you like to start now... [ ] Y/N?"); g(51,13);s("%i",yes); if(yes==yes) { goto waley; } /*if set to yes it will redirect you here*/ waley: do { clrscr(); /*this statement gives you 3 choices*/ g(5,5);p("[1] GAMING"); g(5,7);p("[2] INTERNET"); g(5,9);p("[3] PRINTING"); g(5,15);p("SELECT SERVICE [ ]"); g(22,15);s("%i",&rental); switch(rental) { case 1: /*if you set to 1 it will give you this and key in the hour and minutes*/ if(rental>3){g(15,21);p("OUT OF SERVICE!!!");} g(50,5);p("GAMING RATE"); g(50,6);p("TIME IN - :"); g(50,7);p("TIME OUT - :"); g(50,15);p("TOTAL HOURS - :"); g(50,16);p("TOTAL AMOUNT - "); g(60,6);s("%d",&hr1); g(63,6);s("%d",&m1); g(60,7);s("%d",&hr2); g(63,7);s("%d",&m2); /*after giving value it will give you this calculation*/ addh=12; addm=60; /*if hour 1 is greater than hour 2 it will give you this calculation which hour 2 adds 12 into it and 60 on its minute which give you this calculation*/ if(hr1>hr2) { hr22=hr2+addh; m22=m2+addm; g15=15; hour=hr1-hr2; minute=m1-m2; amount=hour*g15; wholeg=amount; g(65,15);p("%d",hour); g(68,15);p("%d",minute); g(65,16);p("%d",amount); }else{ /*this wont allow you key in more than 12 hours because its based on 12 hours*/ if((hr1>12) || (hr2>12)) { g(15,23); p("YOU ARE NOT ALLOWED TO ENTER MORE THAN 12 HOURS!"); break; } g15=15; hour=hr2-hr1; minute=m2-m1; amount=hour*g15; wholeg=amount; g(65,15);p("%d",hour); g(68,15);p("%d",minute); g(65,16);p("%d",amount); } break; case 2: g(50,5);p("INTERNET RATE"); g(50,6);p("TIME IN - :"); g(50,7);p("TIME OUT - :"); g(50,15);p("TOTAL HOURS - :"); g(50,16);p("TOTAL AMOUNT - "); g(60,6);s("%d",&hr1); g(63,6);s("%d",&m1); g(60,7);s("%d",&hr2); g(63,7);s("%d",&m2); addh=12; addm=60; if(hr1>hr2) { hr22=hr2+addh; /*additional 12 hours*/ m22=m2+addm; /*additional 60 minutes*/ i10=15; hour=hr1-hr2; minute=m1-m2; amount=(hour*i10)+half; wholei=amount1; g(65,15);p("%d",hour); g(68,15);p("%d",minute); g(65,16);p("%d",amount1); }else{ if((hr1>12) || (hr2>12)) { g(15,23); p("YOU ARE NOT ALLOWED TO ENTER MORE THAN 12 HOURS!"); } i10=15; hour=hr2-hr1; minute=m2-m1; amount1=hour*i10; wholei=amount1; g(65,15);p("%d",hour); g(68,15);p("%d",minute); g(65,16);p("%d",amount1); } break; }/*if you key in 3 then it will execute this program*/ if(rental==3) { clrscr(); /*this gives you 3 choices on what type of printing do you want and its value*/ g(5,5);p("PRINTING RATE"); g(5,7);p("[1] Short Colored: 10.00 PHP"); g(5,8);p("[2] Long Colored: 12.00 PHP"); g(5,9);p("[3] Short/Long Black: 7.00 PHP"); g(5,13);p("SELECT MENU [ ]"); g(22,13);s("%i",&print); /*higher than 3 will give you this situation which stops you from printing.*/ if(print>3) { g(26,23);p("OUT OF SERVICE!!!!"); } switch(print) {/*so this is the calculation of every cases*/ case 1: sc=10; g(50,10);p("Enter Number of Pieces:"); g(75,10);s("%d",&total); nump1=total*sc; wholesc=nump1; g(50,11); p("TOTAL:"); g(57,11); p("%d",nump1); break; case 2: lc=12; g(50,10);p("Enter Number of Pieces:"); g(75,10);s("%d",&total); nump2=total*lc; wholelc=nump2; g(50,11);p("TOTAL"); g(57,11);p("%d",nump2); break; case 3: slb=7; g(50,10);p("Enter Number of Pieces:"); g(75,10);s("%d",&total); nump3=total*slb; wholeslb=nump3; g(50,11);p("TOTAL:"); g(57,11);p("%d",nump3); break; } } /*this will give you the choice to do another transaction or no*/ g(20,20); p("ANOTHER TRANSACTION [ ] Y/N?"); g(42,20); s("%s",&answer); } while(answer=='y'); goto Ljay; /*if set to n then it will give you this summary*/ Ljay: clrscr(); g(5,5);p("GAMING:"); g(5,7);p("INTERNET:"); g(5,9);p("PRINTING:"); g(10,11);p("Short Colored:"); g(10,13);p("Long Colored:"); g(10,15);p("Short/Long Black:"); g(13,5);p("%d",wholeg); g(15,7);p("%d",wholei); g(25,11);p("%d",wholesc); g(25,13);p("%d",wholelc); g(29,15);p("%d",wholeslb); /*after giving you the whole summary it will give you another choices if you would like to try again*/ g(20,20); p("THANK YOU FOR USING OUR RENTAL SYSTEM"); g(20,22); p("WOULD YOU LIKE TO TRY AGAIN [ ] Y/N?"); g(50,22); s("%d",yes); if(yes==yes){ goto lombey; } getch(); }