A SINGLE equals character =  is used to assign a value to a memory address. This memory address is usually in the form of an identifier name.

int myVar ;  // declare an integer called myVar

myVar now has an allocated address space and storage space, BUT it has NOT been assigned a value.

A value can now be assigned using a single equals character:

myVar = 42 ;  //the value 42 has now been assigned to myVar