Inc Function

Format

i = inc(numeric_itemʃ,increment_valueʅ);

Description

The inc function increments numeric_item, which is either a dictionary item or a numeric variable. If the optional numeric expression increment_value is present, then the value of that expression is added to numeric_item. If no expression is present, 1 is added to numeric_item. The increment value can be negative or nonnegative. inc(X) is essentially shorthand for X = X + 1;

Return Value

The function returns the sum of the numeric item and the increment value.

Example

X = 5;

inc(X);
// X is 6 after X = X + 1;

inc(X,4);
// X is 10 after X = X + 4;

inc(X,-5);
// X is 5 after X = X + (-5);

X = 5 + inc(X,inc(X));
// X is 17 after X = X + 1; X = X + X; X = 5 + X;