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# Synopsys Interview Experience for R&D Senior Engineer 1

• Last Updated : 20 Aug, 2021

Recently I had gone through four rounds of Synopsys Interviews for R&D Senior Engineer 1

Round 1:

Output-based questions:

1. ## C++

 `int` `j = 0;`` ` `for``(``int` `i = n; i > 1; i = i/2) j++;`` ` `int` `add(``int` `&a, ``int` `&b)`` ` `{`` ` ` ``int` `c = a + b;`` ` ` ``return` `c;`` ` `}`` ` `int` `main()`` ` `{`` ` ` ``int` `int1, int2, sum;`` ` ` ``sum = add(int1, int2);`` ` `}`
2. ## C++

 `int` `a =10;`` ` `int` `&r = a;`` ` `int` `b = 25;`` ` `r = b;`` ` `r++;`` ` `cout << r << endl << a << endl << b << endl;`` ` `void` `printArray(``int` `A[])`` ` `{`` ` ` ``// write code here`` ` `}`` ` `int` `main()`` ` `{`` ` ` ``int` `Arr = {2, 4, 6, 8, 10};`` ` ` ``printArray(Arr);`` ` ` ``return` `0;`` ` `}`
3. ## C++

 `void` `ChangeArray(``int` `A[], ``int` `n)`` ` `{`` ` ` ``for``(``int` `i = 0; i < n; i++)`` ` `  ``A[i]++;`` ` `}`` ` `int` `main()`` ` `{`` ` ` ``int` `Arr = {2, 4, 6, 8, 10};`` ` ` ``ChangeArray(Arr, 5);`` ` ` ``for``(``int` `i = 0; i < 5; i++)`` ` `     ``cout << Arr[i] << ``" "``;`` ` ` ``return` `0;`` ` `}`
4. ## C++

 `void` `func(``int` `n)`` ` `{`` ` ` ``cout << n;`` ` ` ``func(n-1);`` ` `}`` ` `int` `main()`` ` `{`` ` ` ``func(3);`` ` ` ``return` `0;`` ` `}`` ` `int` `func(``int` `n)`` ` `{`` ` ` ``static` `int` `x = 0;`` ` ` ``if``(n<=0)`` ` `  ``return` `0;`` ` ` ``x++;`` ` ` ``return` `func(n-1) + x;`` ` `}`` ` `main()`` ` `{`` ` ` ``func(5);`` ` `}`
5. ## C++

 `void` `foo(``int` `n, ``int` `sum)`` ` `{`` ` ` ``if``(n==0) ``return``;`` ` ` ``int` `k = n%10;`` ` ` ``int` `j = n/10;`` ` ` ``sum = sum + k;`` ` ` ``foo(j, sum);`` ` ` ``cout << k << ``", "``;`` ` `}`` ` `int` `main()`` ` `{`` ` ` ``int` `a = 2048, sum = 0;`` ` ` ``foo(a, sum);`` ` ` ``cout << sum << endl;`` ` `}`
6. ## C++

 `int` `j = 0;`` ` `for``(``int` `i = n; i > 1; i = i/2) j++;`` ` `int` `i = n; 8`` ` `int` `j = 0;`` ` `while``(i > 1) {`` ` `j++;`` ` `i = i/2;`` ` `}`
7. ## C++

 `void` `printArray(``int` `A[])`` ` `{`` ` ` ``// write code here`` ` ` ``int` `len = ``sizeof``(A)/``sizeof``(A);`` ` ` ``for``(``int` `i = 0; i < len; i++) {`` ` `  ``printf``(``"%d "``, A[i]);`` ` ` ``}`` ` `}`` ` `int` `main()`` ` `{`` ` ` ``int` `Arr = {2, 4, 6, 8, 10};`` ` ` ``printArray(Arr);`` ` ` ``return` `0;`` ` `}`
8. ## C++

 `int` `func(``int` `n)`` ` `{`` ` ` ``static` `int` `x = 0;`` ` ` ``if``(n<=0)`` ` `  ``return` `0;`` ` ` ``x++;`` ` ` ``return` `func(n-1) + x;`` ` `}`` ` `main()`` ` `{`` ` ` ``func(5);`` ` `}`
9. ## C++

 `void` `foo(``int` `n, ``int` `sum)`` ` `{`` ` ` ``if``(n==0) ``return``;`` ` ` ``int` `k = n%10;`` ` ` ``int` `j = n/10;`` ` ` ``sum = sum + k;`` ` ` ``foo(j, sum);`` ` ` ``cout << k << ``", "``;`` ` `}`` ` `int` `main()`` ` `{`` ` ` ``int` `a = 2048, sum = 0;`` ` ` ``foo(a, sum);`` ` ` ``cout << sum << endl;`` ` `}`
10. Build Binary search tree using preorder and inorder traversal
11. Virtual function questions in C++

Round 2:

1. Design Queue using stacks
2. Next Greater element and previous smaller element
3. Declare 2d array in C++
4. What each declaration means below
```const char* p; // pointer itself is constant
char * const p; // value is consstant
const char * const p; // both are constants```
5. Design your own vector class and difference between vector and array.

Round 3:

1. Second largest element in a BST.
2. Cycle in a directed and undirected graph
3. Basic C++ questions related to virtual functions and constructors.

Round 4:

1. Find the next number in the series
```3, 5, 8, 13, 22
3 * 2 = 6 - 1   5
5 * 2 = 10 - 2  8
8 * 2 = 16 - 3  13
13 * 2 = 26- 4  22
22 * 2 = 44- 5  39```
2. Convert string number to integer like atoi and ensure proper test cases are covered
3. Why looking for a change and few other behavioral questions.

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