Random questions of programming in C++

switch(choice)
{
case 1:

blah blah blah

break;


case 2:

blah blah blah

break;


case 3:

blah blah blah

break;
}

case "$variable" in 

 "$condition1" ) 
 command... 
 ;; 

 "$condition2" ) 
 command... 
 ;; 

esac 

 switch (choice)
 {
 
 
 case 1:
 
 cout << "You picked minute.\n"
 	 << "There are " << min << " seconds in 1"  << num <<" minute." << endl
 	 <<" Now you can see how many seconds are there in the"
 	 <<" desired minutes." << endl;
 
 // state how many seconds are there in a minute and put it
 // as one integer named min
 
 int min = ( sec * 60);
 
 cout << "Enter the number of minutes you desire to know how"	  <<" many seconds are there. (2 - 59):";
 
 cin >> num;
 
 
 if ( num < 2 || num > 59)
 {
 break;
 }
 
 else
 {
 cout << "There are " << ( min * num) << " seconds in " << num << " minutes.";
 
 cout << " Type function: ";
 
 cin >> func;
 
 }
 break;
 
 
 case 2:
 
 cout << "You picked hour.\n"
 	 << "There are " << hour << " seconds in 1"
 	 << " hour." << endl
 	 << " Now you can see how many seconds are there in the"
 	 << " desired hours."<< endl;
 
 // state how many seconds are there in a hour and put it
 // as one integer name hour
 
 int hour = (min * 60);
 
 cout << "Enter the number of hours you desire to know how"
 	 << " many seconds are there. (2 - 23):";
 
 cin >> num;
 
 
 if ( num < 2 || num > 23)
 {
 break;
 }
 
 else
 {
 cout << "There are " << ( hour * num) << " seconds in " << num << " hours.";
 
 cout << " Type function: ";
 
 cin >> func;
 }
 
 
 case 3:
 
 cout << "You picked day.\n"
 	 << "There are " << day << " seconds in 1"
 	 << " day." << endl
 	 << " Now you can see how many seconds are there in the"
 	 << " desired days." << endl;
 
 // state how many seconds are there in a day and put it
 // as one integer name day
 
 int day = ( hour * 24);
 
 cout << "Enter the number of days you desire to know how"
 	 << " many seconds are there. (2 - 6):";
 
 cin >> num;
 
 
 if ( num < 2 || num > 6)
 {
 break;
 }
 
 else
 {
 cout << "There are " << ( day * num) << " seconds in " << num << " days.";
 
 cout << "Type function: ";
 
 cin >> func;
 }
 
 
 case 4:
 
 cout << "You picked week.\n"
 	 << "There are " << week << " seconds in 1"
 	 << " week." << endl
 	 << " Now you can see how many seconds are there in the"
 	 << " desired weeks." << endl;
 
 //state how many seconds are there in a day and put it
 // as one integer name week
 
 int week = ( day * 7);
 
 cout << "Enter the number of weeks you desire to know how"
 	 << " many seconds are there. (2 - 3):";
 
 cin >> num;
 
 
 if ( num < 2 || num > 3)
 {
 break;
 }
 
 else
 {
 cout << "There are " << ( week * num) << " seconds in " << 
 num << " weeks.";
 
 cout << "Type function: ";
 
 cin >> func;
 };