why is my basic calculator problem not working in c

So I made this loop program in c that is basically a calculator, but i am getting issues with it in vs code(scanf isn’t working) and i tried it in online compiler but something’s off and the program terminates after clicking y.

#include<stdio.h>
int main(){
    int a;int b;char c;char ch="y";
    while(ch=='y'){
        printf("enter the first number\n");
        scanf("%d\n",&a);
        printf("enter the second number\n");
        scanf("%d\n",&b);
        printf("select your operation\n");
        scanf("%c\n",&c);
        if(c=='*'|| c=='x'){
            printf("product is %d\n",a*b);
        }
        else if(c=='/'){
            printf("quotient is %d\n",a/b);
        }
        else if(c=='-'){
            printf("difference is %d\n",a-b);
        }
        else if(c=='+'){
            printf("sum is %d\n",a+b);
        }
        else{
            printf("invalid input\n");
        }
        printf("do you want to continue y or n");
        scanf("%c\n",&ch);
            
    }
    return 0;
}

here is the output:

A C lang noob btw (had python in high school but now struggling in C)