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  • 10th C++ problem

    Manish Goyal

    Member

    Updated: Oct 26, 2024
    Views: 1.1K
    write a program similar to mobile key system?
    Like say you want to send a message to someone
    then if you press 2 one times then press enter it will display a,if 2 times then enter it will display b,if three then c
    similarly upto key 9 you have to make this program

    One constraint:Say if i press 2 then press 3 without pressing enter it should display error 😉

    Note:There is no need of graphic interface :just print output on console
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Replies

  • gaurav.bhorkar

    Member • Mar 7, 2010

    That's an interesting program. I'll try that after I finish my college today.
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  • Manish Goyal

    Member • Mar 8, 2010

    I am waiting Gaurav.
    This program was asked in a coding competition that i had participated last month
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  • silverscorpion

    Member • Mar 8, 2010

    I think this can be easily done by a simple switch case since only one character is to be deduced from the input at a time. The code goes something like this:

    char ans; int a;
    scanf("%d",&a);
    switch (a)
    {
    case 2: ans='a'; break; case 22: ans='b'; break; case 222: ans='c'; break;
    case 3: ans='d'; break; case 33: ans='e'; break; case 333: ans='f'; break;
    case 4: ans='g'; break; case 44: ans='h'; break; case 444: ans='i'; break;
    case 5: ans='j'; break; case 55: ans='k'; break; case 555: ans='l'; break;
    case 6: ans='m'; break; case 66: ans='n'; break; case 666: ans='o'; break;
    case 7: ans='p'; break; case 77: ans='q'; break; case 777: ans='r'; break; case 7777: ans]='s'; break;
    case 8: ans='t'; break; case 88: ans='u'; break; case 888: ans='v'; break;
    case 9: ans='w'; break; case 99: ans='x'; break; case 999: ans='y'; break; case 9999: ans='z'; break;
    default: printf("Error. Invalid sequence.");
    }
    You can also keep a flag variable and depending on whether it is one or zero, you can assign either capital letters or small letters too.. this will do it. What do you say??
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  • Manish Goyal

    Member • Mar 8, 2010

    Quite nice attempt scorpion

    but i want that if someone press 2 then if without pressing enter he presses 3 or

    something else immediately it will display error without waiting for you to press enter
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  • gaurav.bhorkar

    Member • Mar 9, 2010

    I was thinking quite similar to silverscorpion. The break statement after each case is missing in his program. Also print the character after the switch ends.
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  • Manish Goyal

    Member • Mar 9, 2010

    come on guys keep thinking
    frankly saying i was also not able to make this program during that competition but after that i tried this at home and i made it
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  • Manish Goyal

    Member • Mar 10, 2010

    So here is the code for this..if anyone can make it more simpler then he is welcome
    #include<iostream.h>
#include<conio.h>
void main()
{
char ch;
char one[]={'a','b','c'};
char two[]={'d','e','f'};
char three[]={'g','h','i'};
char four[]={'j','k','l'};
char five[]={'m','n','o'};
char six[]={'p','q','r','s'};
char seven[]={'t','u','v'};
char eight[]={'w','x','y','z'};
ch=getch();
int c=ch;
int count=-1,store[1];
while(c!=13)
{

    if(count==-1)
        {
            store[0]=c;
        }
        if(c!=store[0]&&c!=13)
        {
            cout<<"Error"<<endl;
            exit(0);
        }
        else
        {
            count++;
        }ch=getch();
c=ch;

}
if(store[0]==50)
{
cout<<one[count];
}
if(store[0]==51)
{
cout<<two[count];
}if(store[0]==52)
{
cout<<three[count];
}if(store[0]==53)
{
cout<<four[count];
}if(store[0]==54)
{
cout<<five[count];
}if(store[0]==55)
{
cout<<six[count];
}if(store[0]==56)
{
cout<<seven[count];
}if(store[0]==57)
{
cout<<eight[count];
}

}
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  • manav1

    Member • Mar 10, 2010

    hi!! Goyal ,That's an interesting program
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  • Manish Goyal

    Member • Mar 10, 2010

    hi manav
    First of all welcome to ce
    second just be active on ce you will find more interesting things here
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  • HImanshu_Sharma

    Member • Mar 13, 2010

    Yeah Gaurav you are right,,,i hv found many interesting things here...
    my question can u make a folder whch dont hav name??????
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  • Manish Goyal

    Member • Mar 14, 2010

    @ Himanshu .Yes we can but this is not the right place to ask your question.
    just create a new thread in appropriate section

    anyway .. create a new folder and click on rename and press alt+0160

    You will get a folder with no name
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  • imlitoshi11

    Member • Mar 14, 2010

    goyal i like ur code.....hats off
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  • HImanshu_Sharma

    Member • Mar 14, 2010

    ok i'l remember actually m new na so,,,bt i hv another solution for it...
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  • HImanshu_Sharma

    Member • Mar 14, 2010

    dear its nt working,,,space bar shud be also pressed wid alt and this code...get it
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  • Manish Goyal

    Member • Mar 14, 2010

    @imlitoshi thanks for appreciation

    @ himanshu okk Sir and please avoid sms text .
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