Where is the infinite loop in the code?

Input for the code 1 2.5 2 40200000 1 0 2 80400000 2 ffffffff3

#include
#include
#include
int count = 31;
void toBinary(int num, int n){
for(int i = 1; i < n; i++){
if((int)(num/pow(2,(n-i))) > 0){
num = num - pow(2,(n-i));
printf(\"1\");
count--;
}else{
printf(\"0\");
count--;
}
}
}

char checkSign (int sign)
{
char new_sign;
if (sign == 0)
{
new_sign = '+';
return new_sign;
}
else
{
new_sign = '-';
return new_sign;
}
}
void oddCheck(int num){
if(num%2 == 0){
printf(\"0\n\");
count--;
}else{
printf(\"1\n\");
count--;
}
}
void dec2IEEE() {
float dec_num;
short sign;
short dec_exp;
printf(\"\nPlease enter a decimal number: \");
scanf(\"%f\", &dec_num);

/*if dec_num is 0 print out 32-bit IEEE of 0 (32 zeroes)*/
if (dec_num == 0.0f) {
for (int i = 0; i < 31; ++i) {
printf(\"0\");
}
printf(\"\n\");
}
/*check dec_num sign*/
if (dec_num > 0) {
sign = 0;
} else {
sign = 1;
dec_num = abs(dec_num);
}
printf(\"\nSign : %d\n\", sign);
/*find dec_expo*/
dec_exp = floor(log(dec_num) / log(2));
dec_num = dec_num / pow(2, dec_exp);

/*ensure that there is a 1 in front of the decimal*/
while(dec_num < 1.0){
dec_num = dec_num * 2;
dec_exp--;
}

/*create binary exponent first line creates copy of the value ofdec_exp + 127*/
printf(\"%d\n\", dec_exp);
printf(\"Exponent: \");
int exp_copy = dec_exp += 127;
toBinary(dec_exp, 8);
oddCheck(exp_copy);

/*create significand in binary*/
dec_num -= 1;
int power = 0;
while(dec_num != (float)((int)(dec_num))){
dec_num *= 2;
power++;
}
int dec_num_copy = dec_num;
printf(\"Significand: \");
toBinary(dec_num, power);
oddCheck(dec_num_copy);
while(count > 0){
printf(\"0\");
count--;
}
}

void IEEE2Dec(){
int ieee_num;
int ieee_sign;
int ieee_exp;
float ieee_sig;
float ieee_dec;

printf(\"\nPlease Enter IEEE number: \");
scanf(\"%x\", &ieee_num);
if(abs(ieee_num) == 0x00000000){
printf(\"You entered 0\n\");
return;
}
if(ieee_num == 0x7f800000){
printf(\"You entered infinity\n\");
return;
}
if(ieee_num == 0xff800000){
printf(\"You entered negative infinity\n\");
return;
}
if((ieee_num & 0x7fffffff) > 0x7f800000){
printf(\"You entered NAN\n\");
return;
}
ieee_sign = floor (ieee_num / pow (2, 31));
printf (\"Sign: %c\", checkSign (ieee_sign));

ieee_exp = floor ((ieee_num & 0x7F800000) / pow (2,23));
ieee_exp -= 127;
printf (\"\nExponent: %d\", ieee_exp);

ieee_sig = (ieee_num & 0x007fffff) / pow (2, 23);
if (ieee_exp < 0)
{
ieee_dec = ieee_sig;
printf (\"\nDenormalized Decimal: %c%f*2^(%d)\", checkSign(ieee_sign),
ieee_dec, ieee_exp);
return;
}
ieee_sig += 1;
printf (\"\nNormalized Decimal: %f\", ieee_sig);
ieee_dec = ieee_sig * pow (2, ieee_exp);
printf (\"\nDecimal Format: %c%f\", checkSign (ieee_sign),ieee_dec);
}
int main() {
int true = 1;
while(true){
printf(\"Please Enter an Option \n 1. Decimal to IEEE \n 2. IEEE toDecimal \n 3. Exit\n\");
int option;
scanf(\"%d\", &option);

switch(option){

case 1:
dec2IEEE();
break;

case 2:
IEEE2Dec();
break;

case 3:
true = 0;
break;
}
}
return 0;
}