Respuesta :
Answer:
// here is code in c++.
#include <bits/stdc++.h>
using namespace std;
int main()
{
// variables
int hour,min,sec,tot_sec;
string str,s="AM";
cout<<"enter number of hours:";
// read hour
cin>>hour;
cout<<"enter number of minutes:";
// read minute
cin>>min;
cout<<"enter number of seconds:";
// read seconds
cin>>sec;
cout<<"Enter AM or PM:";
// read AM or PM
cin>>str;
if((str.compare(s) == 0 )&& hour==12)
{
hour=0;
}
// calculate total seconds
tot_sec=hour*3600+min*60+sec;
// print the output
cout<<"total seconds since midnight is : "<<tot_sec<<endl;
return 0;
}
Explanation:
Read the value of hour, minute, second and string "AM" or "PM" from user.
Then if string is equal to "AM" then make hour=0.Then multiply hour with
3600, minute with 60 and add them with second.It will give the total seconds
from midnight.
Output:
enter number of hours:12
enter number of minutes:46
enter number of seconds:23
Enter AM or PM:AM
total seconds since midnight is: 2783
