The character line input(operation) doesnt show up on compiling

Question

Im trying to make a calculator but encountering error the scanf("%c",&op); doesnt take up the character on compiling the program I also tried with op=getchar(); but doesnt work either

int main()
{
    int num1,num2,result;
    char op;
    printf("Enter the first number\n");
    scanf("%d",&num1);
    printf("Enter the operation\n");
    scanf("%c",&op);
    printf("Enter the second number\n");
    scanf("%d",&num2);
    switch(op)
    {
    case '+' :
        result=num1+num2;
        printf("The addition of %d and %d is %d",num1,num2,result);
        break;
    case '-' :
        result=num1-num2;
        printf("The subtraction of %d and %d is %d",num1,num2,result);
        break;
    case '*' :
        result = num1*num2;
        printf("The multiplication of %d and %d is %d",num1,num2,result);
        break;
    case '/' :
        result=num1/num2;
        printf("The division of %d and %d is %d",num1,num2,result);
        break;
    default :
        printf("Invalid operation");
    }
    return 0;
}