increment/decrement:

you could increment a variable by doing this:

x = x +1;

C++ has a special operator for incrementing/decrementing integer variables:

<integer variable name>++ //... will use the variable and then increment

++<integer variable name> // will increment and then use it.

Examples:

int num=1, j=3, k;

k= num++ - j ;

k = --j + 1;

k= j+ ++num;