x = int(input("press 1 for dec to oct,bin,hex \n press 2 for bin to dec,hex,oct \n press 3 for oct to bin,hex,dec \n press 4 for hex to bin,dec,oct \n"))
if x is 1:
decimal =int(input('Enter the decimal number: '))
print(bin(decimal),"in binary.")
print(oct(decimal),"in octal.")
print(hex(decimal),"in hexadecimal.")
if x is 2:
binary = input("Enter number in Binary Format: ");
decimal = int(binary, 2);
print(binary,"in Decimal =",decimal);
print(binary,"in Hexadecimal =",hex(decimal));
print(binary,"in octal =",oct(decimal));
if x is 3:
octal = input("Enter number in Octal Format: ");
decimal = int(octal, 8);
print(octal,"in Decimal =",decimal);
print(octal,"in Hexadecimal =",hex(decimal));
print(octal,"in Binary =",bin(decimal));
if x is 4:
hex = input("Enter number in hexa-decimal Format: ");
decimal = int(hex, 16);
print(hex,"in Decimal =",decimal);
print(hex,"in octal =",oct(decimal));
print(hex,"in Binary =",bin(decimal));