#include <iostream>
using namespace std;


long hms_to_secs(int h,int m,int s)

{
    long seconds;

    seconds=h*3600+m*60+s;
    return seconds;

}

void main()


{

char c;
int h,m,s;
for(int n=1;n<10;n++)
{
cout<<"enter time in this formate 12:12:49  :  ";

cin>>h>>c>>m>>c>>s;

cout<<hms_to_secs(h,m,s)<<endl;
}

}

#include <iostream>
using namespace std;

struct time
{
    int hours,minutes,seconds;

};

long time_to_secs(time);

time secs_to_time(long);

int main()


{
    time time1,time2;
    
    char colon;

    cout<<"enter First time in this format (12:30:30):";
    cin>>time1.hours>>colon>>time1.minutes>>colon>>time1.seconds;

    cout<<"enter Second time in this format (12:30:30):";
    cin>>time2.hours>>colon>>time2.minutes>>colon>>time2.seconds;

    long totalseconds1=time_to_secs(time1);

    long totalseconds2=time_to_secs(time2);

    long totalseconds=totalseconds1+totalseconds2;

    time totaltime=secs_to_time(totalseconds);


    cout<<"\nTotal Time: "<<totaltime.hours<<":"<<totaltime.minutes<<":"<<totaltime.seconds<<endl;

    return 0;

}

long time_to_secs(time time1)

{


long totalseconds=time1.hours*3600 + time1.minutes*60 + time1.seconds;

return totalseconds;
}


time secs_to_time(long totalseconds)

{
    int temp;
    time time3;

    time3.hours=totalseconds/3600;

    temp=totalseconds%3600;

    time3.minutes=temp/60;

    time3.seconds=temp%60;

    return time3;

}

Ahmad ne kaha tha mein kar doon ga post...
Ahmad ne tu post karnay hi nahin hain, Main he kar daita hoon