Question

Read the following code:

int a = 10; //line 1
int b = 25; //line 2
sum = a + b; //line 3
int a = 100; //line 4
System.out.println(a); //line 5
System.out.println(b); //line 6
System.out.println(sum); //line 7

Line _____ and line _____ have syntax errors.

Answer 1

The syntax errors are highlighted below

int a = 10; //line 1
int b = 25; //line 2
sum = a + b; //line 3
int a = 100; //line 4
System.out.println(a); //line 5
System.out.println(b); //line 6
System.out.println(sum); //line 7

so line3&7 are syntax errors

line 3 & 7 raises a syntax error since sum has not been declared any data type

but line 4 also raises an error since a is already defined in line-1