c++

2. Write a program that prompts the user to enter a four binary numbers as a string and displays its corresponding decimal value. Here are sample runs: Coutput> Enter a four-digit binary string: 1111 The decimal number for 1111 is 15 COutput> Enter a four-digit binary string: 0100 The decimal number for 0100 is 4 3. Write a program that prompts the user to enter a decimal number between 0 and 15 and displays its corresponding binary value. Here are sample runs

Enter a decimal number between 0 and 15: 11 The binary number for 11 is 1011

Enter a decimal number between 0 and 15: 5 The binary number for 5 is 101