Question

(16 minutes) The function below has 4 errors. It has two integer parameters representing the time in hours and minutes. It should add one to the minutes, unless the minutes value is 59, in which case it should set the minutes to 0 and add one to the hours. Changes to either parameter should change the corresponding variable argument from the function call. The function should also calculate the total number of minutes (60 times the hours plus the minutes) and return that as the result. Find the errors in the code and, for each one, list the line number(s) where the error occurs and explain how to make the needed correction. 1. void addMinute(int hour, int &minute) { if (minute < 59) minute++; in & s o noso a else minute =0; hour++; total = hour*60 + minute; 11. return total; 12. }

Answer 1

4 errors:

Line num 1 has two errors: It should be

int addMinute(int hour,int minute)

First Error: Function is returning something, so its not void, it should be int.

Second Error: It should not be &minute in the paramenter, just int minute would do the job

Line number 6 has one error:

else{

minute = 0;

hour++;

}

Third error:As the else clause contains two statements, it should have brackets to surround it.

Line number 10 has an error: It should be

int total = hour*60+minute

Fourth error: Variable total should be defined as int before using it.

Correct Code:

int addMinute(int hour, int minute){
   if(minute<59)
   minute++;
   else{
   minute = 0;
   hour++;
   }
int total = hour*60+minute;
return total;
}

Comment in case of any doubt. Good luck.