Discuss the following:
Q: Which of the following variable declarations are correct? If a variable declaration is not correct give the reason(s) and provide the correct variable declaration.
n = 12; //Line 1
char letter = ; //Line 2
int one = 5, two; //Line 3
double x, y, z; //Line 4
Line 3 and 4 are correct but what is wrong with Line 1 and Line 2?