Problem Statement
You are given time in AM/PM format. Convert this into a 24 hour format.
Note Midnight is 12:00:00AM or 00:00:00 and 12 Noon is 12:00:00PM.
Input Format
Input consists of time in the AM/PM format i.e. hh:mm:ssAM or hh:mm:ssPM
where
01≤hh≤12
00≤mm≤59
00≤ss≤59
Output Format
You need to print the time in 24 hour format i.e. hh:mm:ss
where
00≤hh≤23
00≤mm≤59
00≤ss≤59
Sample Input
07:05:45PM
Sample Output
19:05:45
Solution
#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
int main() {
/* Enter your code here. Read input from STDIN. Print output to STDOUT */
int h,m,s;
char c;
scanf("%d:%d:%d%c",&h,&m,&s,&c);
if(c=='P')
if(h==12)
cout<<12;
else cout<<h+12;
else if(h<10)
cout<<"0"<<h;
else if(h==12)
cout<<"00";
else cout<<h;
if(m<10)
cout<<":0"<<m;
else cout<<":"<<m;
if(s<10)
cout<<":0"<<s;
else cout<<":"<<s;
return 0;
}