Soluction:

#include< iostream>
using namespace std;

     double seconds_count(int hours, int minutes, int seconds){
        double seconds_calculation;
 if(hours<=12){
    seconds_calculation=hours*3600;
    seconds_calculation=seconds_calculation+minutes*60;
    seconds_calculation=seconds_calculation+seconds;
    
    return seconds_calculation;
}
else
    return -1;

 }
int main()
  {
int a, b,c, output;
cout<<"Enter Hours :";
cin>>a;
cout<<"Enter Minutes :";
cin>>b;
cout<<"Enter Seconds :";
cin>>c;
output=seconds_count(a,b,c);
if (seconds_count(a,b,c)>-1){
cout<<"Seconds That Has Passed Since The Last Time Clock Struck 12:"<<output;
    }
else
cout<<"Sorry You are Exeeding The Time Limit";
 }