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Tahajjud Calculator.cpp
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Tahajjud Calculator.cpp
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#include<stdio.h>
#include<string.h>
int tahajjud(int iH, int iM, int fH, int fM)
{
int i, f, td, t;
i = (iH)*60 + iM;
f = (fH + 12)*60 + fM;
td = (f - i)/3;
t = i + 2*td;
//printf("i = %d, f = %d, td = %d, t = %d\n", i, f, td, t);
return t;
}
int tahajjudDisp(int t)
{
int hr, mn;
char ampm;
//Calculate
if (t >= 720)
{
hr = t/60 - 12;
if (hr < 1)
{
hr = 12;
}
mn = t%60;
ampm = 'A';
}
else
{
hr = t/60;
if (hr < 1)
{
hr = 12;
}
mn = t%60;
ampm = 'P';
}
//Display
printf("Tahajjud Time: ");
if (hr<10)
{
printf("0%d:", hr);
}
else
{
printf("%d:", hr);
}
if (mn<10)
{
printf("0%d", mn);
}
else
{
printf("%d", mn);
}
printf(" %cM", ampm);
}
int main ()
{
int ishaHr, ishaMin, fajrHr, fajrMin, t, i;
printf("Enter Maghrib time (12 hour format): ");
scanf("%d:%d", &ishaHr, &ishaMin);
printf("Enter Fajr time (12 hour format): ");
scanf("%d:%d", &fajrHr, &fajrMin);
t = tahajjud(ishaHr, ishaMin, fajrHr, fajrMin);
tahajjudDisp(t);
printf("\nPress 0 to terminate.\n");
scanf("%d", &i);
while(i != 0)
{
scanf("%d", &i);
break;
}
}