# operator +

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### operator +

Create a new expression by adding a pair of Gurobi objects.

 GRBLinExpr operator + ( GRBLinExpr expr1, GRBLinExpr expr2 )
Arguments:

expr1: First linear expression argument.

expr2: Second linear expression argument.

Return value:

A linear expression that is equal to the sum of the two argument expressions.

 GRBLinExpr operator + ( GRBLinExpr expr, GRBVar var )
Arguments:

expr: Linear expression argument.

var: Variable argument.

Return value:

A linear expression that is equal to the sum of the argument linear expression and the argument variable.

 GRBLinExpr operator + ( GRBVar var, GRBLinExpr expr )
Arguments:

var: Variable argument.

expr: Linear expression argument.

Return value:

A linear expression that is equal to the sum of the argument linear expression and the argument variable.

 GRBLinExpr operator + ( GRBVar var1, GRBVar var2 )
Arguments:

var1: First variable argument.

var2: Second variable argument.

Return value:

A linear expression that is equal to the sum of the two argument variables.

 GRBLinExpr operator + ( double a, GRBVar var )
Arguments:

a: Constant.

var: Variable.

Return value:

A linear expression that is equal to the sum of the constant and the variable argument.

 GRBLinExpr operator + ( GRBVar var, double a )
Arguments:

var: Variable.

a: Constant.

Return value:

A linear expression that is equal to the sum of the constant and the variable argument.

Arguments:

Return value:

A quadratic expression that is equal to the sum of the two argument quadratic expressions.

Arguments:

var: Variable argument.

Return value:

A quadratic expression that is equal to the sum of the argument quadratic expression and the argument variable.