Roman Numeral Conversion (C)

[code]
void UserConvert(void)

{
int num1;

printf(“You have chosen to input the Arabic Number you wish to convert yourself. Please enter an Arabic Number: n”);
scanf(“%i”, &num1);

while (num1 >= 1000)
{
printf(“M”);
num1 -= 1000;
}
if (num1 >= 900)
{
printf(“CM”);
num1 -= 900;
}
if (num1 >= 500)
{
printf(“D”);
num1 -= 500;
}
if (num1 >= 400)
{
printf(“CD”);
num1 -= 400;
}
while (num1 >= 100)
{
printf(“C”);
num1 -= 100;
}
if (num1 >= 90)
{
printf(“XC”);
num1 -= 90;
}
if (num1 >= 50)
{
printf(“L”);
num1 -= 50;
}
if (num1 >= 40)
{
printf(“XL”);
num1 -= 40;
}
while (num1 >= 10)
{
printf(“X”);
num1 -= 10;
}
if (num1 >= 9)
{
printf(“IX”);
num1 -= 9;
}
if (num1 >= 5)
{
printf(“V”);
num1 -= 5;
}
if (num1 >= 4)
{
printf(“IV”);
num1 -= 4;
}
while (num1 >= 1)
{
printf(“I”);
num1 -= 1;
}
}

———

void main()

{
int userchoice;

do
{
printf(“Welcome to the numeral conversion program. Please press 1 to enter the Arabic Number you wish to convert, or 2 to convert a list of numbers: n”);
scanf(“%d”, &userchoice);
}
while ((userchoice != 1) && (userchoice != 2));

if (userchoice == 1)
UserConvert(); //function called here.
else if (userchoice == 2)
BatchConvert();
else;
}[/code]

Hi guys. I have to write a program in C to convert Arabic Numbers to Roman Numerals. This program compiles, but when i type in any number the result i get is MMDDCCLLXXVVI followed by a string of random characters. Does anyone have any idea why this could be?

ps. don’t worry about the BatchConvert function, one step at a time atm! 😛

Thanks in advance.