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no match for operator++ error in struct

kianarahma (2)
Hello, Im trying to call a function from my .h file, but i got an "no match for operator++" error.
Here's where the error occured :

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  	AddMinute(++T1, 1);
	cout<<isTimeValid(T1)<<endl;;
	DisplayTime(T1);


Full code :
main.cpp

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#include <iostream>
#include "time.h"
using namespace std;

int main(int argc, char** argv) {
	
	time T1;
	setHour(&T1, 5);
	setMinute(&T1, 30);
	setSecond(&T1, 12);
	cout<<isHourValid(T1)<<endl;
	cout<<isMinuteValid(T1)<<endl;
	cout<<isSecondValid(T1)<<endl;
	cout<<isTimeValid(T1)<<endl;
	DisplayTime(T1);
	

	
	time T2;
	setHour(&T2, 15);
	setMinute(&T2, 62);
	setSecond(&T2, 12);
	cout<<isHourValid(T2)<<endl;
	cout<<isMinuteValid(T2)<<endl;
	cout<<isSecondValid(T2)<<endl;
	DisplayTime(T2);
	
	//change the minute of T2
	setMinute(&T2, 43);
	cout<<isTimeValid(T2);
	DisplayTime(T2);
	
	AddMinute(++T1, 1);
	cout<<isTimeValid(T1)<<endl;;
	DisplayTime(T1);
	
	return 0;
}


time.h
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#ifndef TIME_H
#define TIME_H

struct time{
	int hour;
	int minute;
	int second;
};

bool isHourValid(time T);
bool isMinuteValid(time T);
bool isSecondValid(time T);
bool isTimeValid(time T);

void AddMinute (time T1, int m);
void AddSecond (time T1, int s);

void MinusMinute (time T1, int m);
void MinusSecond (time T1, int s);

void setHour (time *T, int h);
void setMinute (time *T, int m);
void setSecond (time *T, int s);

void DisplayTime (time T);

#endif


time.cpp
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#include <iostream>
#include "time.h"
using namespace std;

bool isHourValid(time T)
{
	if(T.hour >= 0 && T.hour <= 23){
		return true;
	}else{
		return false;
	}
}
bool isMinuteValid(time T)
{
	if(T.minute >= 0 && T.minute <= 59){
		return true;
	}else{
		return false;
	}
}
bool isSecondValid(time T)
{
	if(T.second >= 0 && T.second <= 59){
		return true;
	}else{
		return false;
	}
}
bool isTimeValid(time T)
{
	if(isHourValid(T) && isMinuteValid(T) && isSecondValid(T)){
		return true;
	}
}

void AddMinute (time T1, int m)
{
    ++m;
    if(T1.minute ==60){
        ++T1.hour;
        T1.minute = 0;
    }
}
void AddSecond (time T1, int s)
{
    ++s;
    if (T1.minute >= 60){
        ++T1.hour;
        T1.minute -= 60;
    }
    if (T1.second >= 60){
        ++T1.minute;
        T1.second -= 60;
    }
}

void MinusMinute(time T1, int m)
{
	--m;

    if (T1.minute >= 0){
        --T1.hour;
        T1.minute += 59;
    }
    if (T1.second >= 0){
        --T1.minute;
        T1.second += 59;
    }
}
void MinusSecond(time T1, int s)
{
    --s;

    if (T1.second >= 0){
        --T1.minute;
        T1.second += 59;
    }

    if (T1.minute >= 0){
        --T1.hour;
        T1.minute += 59;
    }
}

void setHour (time *T, int h)
{
	T->hour = h;
}
void setMinute (time *T, int m)
{
	T->minute = m;
}
void setSecond (time *T, int s)
{
	T->second = s;
}

void DisplayTime (time T)
{
	cout<<T.hour<<":"<<T.minute<<":"<<T.second<<endl;
}

}
Last edited on
jonnin (11437)
you do not have operator ++ on your 'time' struct, but you attempt ++T1 in your line 1 first section example.
you need to define ++ for the type you created in order to use it, or, instead of ++, before line 1 you need something like T1.second++;
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