Array passed as parameter not accessible outside of user defined function - arrays

Question

This code is to convert a inputted decimal number to binary, hex, and octal without format specifiers. It also is supposed to print the results to a text file. Every works fine except the 3 char arrays storing hex, oct, and binary are not accessible outside of the function that converted them.
#include <stdio.h>
#include <time.h>
char *getDateAndTime();
int getInteger();
int atoi(const char *str);
void decimalToBinary(int decValue, char binString[]);
void decimalToHex(int decValue, char hexString[]);
void decimalToOct(int decValue, char octString[]);
int saveFile(char name[], char *getDateAndTime(), int decValue, char octString[], char hexString[], char binString[]);
int main()
{
char binString[32];
char octString[32];
char hexString[32];
char dateTime[32];
char name[32];
int decValue = 0;
int saveSuccess = 0;
printf("Enter your name: ");
fgets(name, sizeof(name), stdin);
decValue = getInteger();
if (decValue != 'x'){
decimalToHex(decValue, hexString);
decimalToOct(decValue, octString);
decimalToBinary(decValue, binString);
saveFile(name, getDateAndTime, decValue, octString, hexString, binString);
}
printf("\nGoodbye!");
return 0;
}
char *getDateAndTime()
{
time_t t;
time(&t);
return ctime(&t);
}
int getInteger()
{
char number[9];
int num;
int status = 1;
do {
printf("Enter an Integer [1-1,000,000] or type x to exit: ");
fgets(number, sizeof(number), stdin);
if (number[0] == 'x')
{
status = 0;
}
else
{
num = atoi(number);
if (num < 1 || num > 1000000)
{
printf("Error: %d is out of range\n", num);
}
else
{
status = 0;
return num;
}
}
} while (status);
}
void decimalToBinary(int decValue, char binString[])
{
int quotient;
int i = 1;
int j;
quotient = decValue;
while(quotient!=0){
binString[i++]= quotient % 2;
quotient = quotient / 2;
}
printf("Decimal: %d\nBinary: ",decValue);
for(j = i -1 ;j> 0;j--)
printf("%d",binString[j]);
printf("\n");
}
void decimalToHex(int decValue, char hexString[]){
long int remainder,quotient;
int i=1,j,temp;
quotient = decValue;
while(quotient!=0){
temp = quotient % 16;
if( temp < 10)
temp =temp + 48;
else
temp = temp + 55;
hexString[i++]= temp;
quotient = quotient / 16;
}
printf("Hexadeciaml: ");
for(j = i -1 ; j> 0; j--)
printf("%c",hexString[j]);
}
void decimalToOct(int decValue, char octString[])
{
int quotient;
int i = 1;
int j;
quotient = decValue;
while(quotient!=0){
octString[i++]= quotient % 8;
quotient = quotient / 8;
}
printf("\nOctal: ");
for(j = i -1 ;j> 0;j--)
printf("%d",octString[j]);
printf("\n");
}
int saveFile(char name[], char* getDateAndTime(), int decValue, char octString[], char hexString[], char binString[])
{
char choice;
int status = 1;
printf("Save to a file? (y/n): ");
scanf(" %c", &choice);
while (status){
if (choice == 'y'){
FILE *ptr_file;
ptr_file =fopen("G01303907_HW3.txt", "w");
if (!ptr_file){
return 1;
}
int results = fprintf(ptr_file,"Name: %s\nDate: %s\nDecimal Value:%d\nHexadecimal String: %s\nOctal String: %s\nBinary String: %s\n",name, getDateAndTime(), decValue, hexString, octString, binString);
if (results == EOF) {
printf("Error: ");
}
fclose(ptr_file);
status = 0;
return 0;
}
else if (choice == 'n')
{
status = 0;
return -1;
}
else{
printf("Error: illegal value\nSave to a file? (y/n): ");
scanf("%s", &choice);
}
}
}
terminal
Enter an Integer [1-1,000,000] or type x to exit: 23
Hexadeciaml: 17
Octal: 27
Decimal: 23
Binary: 10111
Save to a file? (y/n): y
Goodbye!
Text Document
Name: Mason
Date: Mon Oct 3 23:38:59 2022
Decimal Value:23
Hexadecimal String:
Octal String:
Binary String: