How to initialize a 2D array with all values same?

Question

I want to initialize a 2D array with -1 as all the value. I used memset() for this.

#include 
using namespace std;

int dp[100]         


        

Answer 1

You can't use memset in the global scope. It must be written in main scope.

#include 
using namespace std;

int dp[100][100];

int main() {
    memset(dp, -1, sizeof(dp));
    cout<