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class Example
{
void firstMethod()
{
int myVar; // local variable
...
}
void anotherMethod()
{
myVar = 42; // error - variable not in scope
...
}
}

{
void firstMethod()
{
myField = 42; // ok 
...
}
void anotherMethod()
{
myField++; // ok
...
}
int myField = 0; // global variable
}

int age = 24; // this is implicit declaration where value is assigned to the variables 
int samAge = age; // this is explicit declaration where value is assigned to variable samAge by another variable age