+= operator in C/C++? Solved

Question

Hello,  Hello, well as the title says, could someone just explain to me in two or three words what the code means: int nombreDeSecondes(int heures, int minutes, int secondes) {  int total = 0;   total = heures * 60 * 60;  total += minutes * 60;  total += secondes;   return total; }  This function returns a total in seconds, but how do we interpret "total += minutes" please?  Thank you in advance :)

Neliel · Accepted Answer

+= is a way to increment.  Example:  t+=1 means t=t+1 so t+=x means t=t+x  there you go -- Utae Gamuza

Nabla's · Answer

+= is a shorthand notation...  for example total += minutes * 60; which is total = total + minutes * 60  it allows you to write less on one line... it also works with -= (and probably with /=, *=, %=) as a notation you use more often, there are i++, ++i, i-- or --i which allow you to increment or decrement, for example, a variable (i in this case) if the ++ is placed before, it performs the increment first, then the instruction... this can be useful if you do a ++ in a condition

CaPiT · Answer

Hello, as in many languages: total += minutes * 60;  Is equivalent to: total = total + minutes * 60;

KiraX10A · Answer

Oh sure. So easy ^^. Thank you both :)

Nabla's · Answer

as condensed writing, which I had never seen in class, there is this that we use a lot at work (and that I hate):  bool test; int i; ... test?i=1:i=2  it is equivalent to if (test==true)i=1;else i=2;

Neliel · Answer

We lose a lot in code readability by condensing the formulas too much... Personally, I only knew those that aren't too bad: c++; c--; --c; ++c; c+=1; c-=1; c*=2; (I have a doubt about the last one)    -- Utae Gamuza

+= operator in C/C++?

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