Unconvertable?

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  1. #1
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    Question Unconvertable?

    Hi all,

    I try to convert the following Qbasic into c++ format , but it does not seem to work. Can you help?

    The seemingly complex formula works out which month and date Easter Sunday falls into. It works fine in Qbasic, for example 2002 Easter Sunday falls ino March 31st. WW=Month, XX=Easter Day.
    It seems to be the rounding problem in my prgram. Once this problem is ironed out a whole calendar of any year can be programmed based on this formula. Thanks for any help.

    Here are my C++ and Qbasic codes:
    #include <stdio.h>
    #include <iostream.h>
    #include <conio.h>
    #include <stdlib.h>
    #include <ctype.h>
    #include <math.h>

    int AA,BB,CC,DD,EE,FF,GG,HH,II,JJ,KK,LL,MM,NN;
    int PP,QQ,RR,SS,TT,UU,VV,WW,XX,ZZ;
    int Y;

    //EASTERDAY:
    //DEF FNA(A) = INT(100 * A + .5) / 100
    int main()
    {
    clrscr();
    cout<<"Enter year: ";
    cin>>Y;
    cout.precision(2);
    ZZ = int(Y / 19);
    AA = floor(((Y / 19 - ZZ) * 19) * 100 +.5) / 100;
    BB = int(Y / 100);
    CC = floor(((Y / 100 - BB) * 100) * 100 +.5) / 100;
    DD = int(BB / 4);
    EE = floor(((BB / 4 - DD) * 4) * 100 +.5) / 100;
    FF = int((BB + 8) / 25);
    GG = floor((((BB + 8) / 25 - FF) * 25) * 100 +.5) / 100;
    HH = int((BB + 1 - FF) / 3);
    II = floor((((BB + 1 - FF) / 3 - HH) * 3) * 100 +.5) / 100;
    JJ = (19 * AA) + (BB + 15) - (DD + HH);
    KK = int(JJ / 30);
    LL = floor(((JJ / 30 - KK) * 30 ) * 100 +.5) / 100;
    MM = int(CC / 4);
    NN = floor(((CC / 4 - MM) * 4) * 100 +.5) / 100;
    PP = (2 * EE) + (2 * MM) + 32 - (LL + NN);
    QQ = int(PP / 7);
    RR = floor(((PP / 7 - QQ) * 7) * 100 +.5) / 100;
    SS = AA + (11 * LL) + (22 * RR);
    TT = int(SS / 451);
    UU = floor(((SS / 451 - TT) * 451) * 100 +.5) / 100;
    VV = (LL + RR + 114) - (7 * TT);
    WW = int(VV / 31);
    XX = floor(((VV / 31 - WW) * 31) * 100 +.5) / 100;
    cout<<"Month ="<<WW<<"\tEaster Date ="<<(XX+1)<<"\tZZ="<<ZZ<<"\tAA="<<AA;
    getch();
    return 0;
    }

    Qbasic prog:

    START:
    CLS
    COLOR 14
    PRINT "What year ";
    INPUT Y
    IF Y < 1 GOTO START
    REM========== EASTER DAY=============================================== ======
    EASTERDAY:
    DEF FNA (A) = INT(100 * A + .5) / 100
    ZZ = INT(Y / 19)
    AA = FNA((Y / 19 - ZZ) * 19)
    BB = INT(Y / 100)
    CC = FNA((Y / 100 - BB) * 100)
    DD = INT(BB / 4)
    EE = FNA((BB / 4 - DD) * 4)
    FF = INT((BB + 8) / 25)
    GG = FNA(((BB + 8) / 25 - FF) * 25)
    HH = INT((BB + 1 - FF) / 3)
    II = FNA(((BB + 1 - FF) / 3 - HH) * 3)
    JJ = (19 * AA) + (BB + 15) - (DD + HH)
    KK = INT(JJ / 30)
    LL = FNA((JJ / 30 - KK) * 30)
    MM = INT(CC / 4)
    NN = FNA((CC / 4 - MM) * 4)
    PP = (2 * EE) + (2 * MM) + 32 - (LL + NN)
    QQ = INT(PP / 7)
    RR = FNA((PP / 7 - QQ) * 7)
    SS = AA + (11 * LL) + (22 * RR)
    TT = INT(SS / 451)
    UU = FNA((SS / 451 - TT) * 451)
    VV = (LL + RR + 114) - (7 * TT)
    WW = INT(VV / 31)
    XX = FNA((VV / 31 - WW) * 31 + 1)

    PRINT
    PRINT "MONTH="; WW
    PRINT "EASTER DAY= "; XX
    PRINT
    PRINT "ZZ="; ZZ, "AA="; AA, "BB="; BB, "CC="; CC, "DD="; DD, "EE="; EE, "FF="; FF, "GG="; GG,
    PRINT "HH="; HH, "II="; II, "JJ="; JJ, "KK="; KK, "LL="; LL, "MM="; MM, "NN="; NN, "PP="; PP,
    PRINT "QQ="; QQ, "RR="; RR, "SS="; SS, "TT="; TT, "UU="; UU, "VV="; VV, "WW="; WW, "XX="; XX

    END

  2. #2
    Registered User
    Join Date
    Oct 2001
    Posts
    2,934
    >int AA,BB,CC,DD,EE,FF,GG,HH,II,JJ,KK,LL,MM,NN;
    >int PP,QQ,RR,SS,TT,UU,VV,WW,XX,ZZ;
    >int Y;

    You could just change all these to float:

    float AA,BB,CC,DD,EE,FF,GG,HH,II,JJ,KK,LL,MM,NN;
    float PP,QQ,RR,SS,TT,UU,VV,WW,XX,ZZ;
    float Y;

  3. #3
    Registered User Dual-Catfish's Avatar
    Join Date
    Sep 2001
    Posts
    802
    Also, I'm pretty sure it would be considered good style to use an array here.

  4. #4
    Seņor Member
    Join Date
    Jan 2002
    Posts
    561
    And some damn CODE TAGS!!!!!!!!

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