What is the purpose of an assignment statement?

Answer 1

An assignment statement sets the value of a named object. This can be used to initialise the object's value or to change the object's value. The object may be a constant or variable, however you can only initialise a constant, not change it.

int i = 42; // Assigns the value 42 to the integer variable named i.

i = 0; // Replaces the value 42 with the value 0.

const double pi = 3.14; // Assigns the value 3.14 to the constant named pi.

pi = 3.14159; // Compiler error; pi is constant!

Answer 2

In assignment statements we use the schema

st.1 = st.2

what happen is that

the st.2 is sampled and solved if it's not a direct value

EX: st.1 = (1+14)*5

it's sampled to : st.1 = 75

then it's assigned to the variable st.1

so we can say that the right hand side of "=" is calculated then it's assigned to the left hand side.

Answer 3

An assignment statement is any statement that includes an expression where an object is assigned a value. In most cases we use the assignment operator (=) to assign a value to an object however assignment can also be achieved through construction (initialisation). Constant variables are immutable and must always be initialised with a value at the point of instantiation. All other variables can be assigned a value at any time.