No of identical digit showed by digital clock | Infosys

Given a  digital clock, the task is to find how many times the clock shows identical time. A specific time is said to be identical if every digit in the hours and minutes is the same i.e. the time is of type T: T, T: TT, TT: T, TT: TT.

Logic:

• Get the hours and minutes from the user.
• Then count the number of single digit hours identical with single and double-digit minutes.
• And count the number of double-digit hours identical with single and double-digit minutes.
• At last print the count which is the number of occurrences of identical digits.

Program:

#include<stdio.h>
void main()
{
    int hours,minutes,count=1,i;//count is initialized to 1 because for inputs 0:0 occur
    printf("enter the hours:");
    scanf("%d",&hours);
    printf("enter the minutes:");
    scanf("%d",&minutes);
    //single digit hours
    for(i=1;i<=9&&i<hours;i++)
    {
        if(i<minutes)//single digit minutes
            count++;
        if(i*10+i<minutes)//double digit minutes
            count++;
    }
    //double digit hours
    for(i=11;i<=99&&i<hours;i+=11)
    {
        if(i<minutes)//double digit minutes
            count++;
        if(i%10<minutes)//single digit minutes
            count++;
    }
    printf("Count:%d",count);
}

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