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C Programming - Pointers

Exercise : Pointers - Point Out Errors
1.
Point out the compile time error in the program given below. 
#include<stdio.h>

int main()
{
    int *x;
    *x=100;
    return 0;
}
Error: invalid assignment for x
Error: suspicious pointer conversion
No error
None of above
Answer: Option
Explanation:
While reading the code there is no error, but upon running the program having an unitialised variable can cause the program to crash (Null pointer assignment).
2.
Point out the error in the program 
#include<stdio.h>

int main()
{
    int a[] = {10, 20, 30, 40, 50};
    int j;
    for(j=0; j<5; j++)
    {
        printf("%d\n", a);
        a++;
    }
    return 0;
}
Error: Declaration syntax
Error: Expression syntax
Error: LValue required
Error: Rvalue required
Answer: Option
Explanation:
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