How to use memory that will last after the program finishes, How read a input and send a simple output from a usb and send a output to that usb.

I have this program and I need help with 2 issues

It needs a way to save the information for thr[acct] and timesave[acct]. I need a way to save the information so it can be used later. I know I am supposed to write another file for it to store and pull from but I do not know how to go about it.

It needs a way to read a square wave signal from a specified USB and it needs a way to send a output signal high or low to the USB. I have been looking around but I have not found a way to go about it.

Any help with this would be greatly appreciated.

#include <stdio.h>
#include <stdlib.h>

void accountselect();

    int timesave[20]={0};
    int thr[20]={0};
    int p; //"input from the heart rate monitor"
    int p1;
    int tvon; //"output from program to usb or other output"

void accountselect()
{
    int input=0;
     
    //system("clrscr");
    printf( "Enter your Account Number, 0 to quit: " );
    scanf( "%d", &input );
    switch ( input ) {
        case 1-19:            /* Note the colon, not a semicolon */
            workoutbegin(input);
            break;
        case 0:        
            printf( "Thanks for using exervision\n" );
            break;
        default:            
            printf( "Bad input, quitting!\n" );
            break;
    }
    getch();
}

void accountset()
{
    int age;                          /* Need a age... */
    char sex;

    // set account number
    //fscanf
    //fprintf
    //
    int acct=1;
      
    printf( "Please enter your age: ");  /* Asks for age */
    scanf( "%d", &age );                 /* The input is put in age */
    printf("please enter your gender (m/f): "); /*asks for sex */

    // this should be fixed some time to not read the return as the character
	sex=getch();
	sex=getch();
	
    if (sex=='f' ) {                  /* If the sex is f */
        thr[acct]=226-age;
    }
    else if (sex=='m') {            /* if the sex is m */ 
        thr[acct] = 220-age;
    }
    else {
        printf( "invalid entry\n" );     /* Executed if no other statement is */
        //break;
    }
    printf ("Your target heart rate is %d\n" ,thr[acct] ); /* Just to show you it works... */
    printf("Your account number is %d.  Please remember this number for future use.\n",acct);
    system("Pause");
    //return 0;
}

void account()
{
    int input;
     
    //system("clr");
    printf( "1. Run Exervision\n" );
    printf( "2. Create account\n" );
    printf( "3. quit\n" );
    printf( "Selection: " );
    scanf( "%d", &input );
    switch ( input ) {
        case 1:            /* uses account* to run*/
            accountselect();
            break;
        case 2:          
            accountset();
            break;
        case 3:        
            printf( "Thanks for using exervision\n" );
            break;
        default:            
            printf( "Bad input, quitting!\n" );
            break;
 }
    getchar();

}


int workoutbegin(int acct)
{
/*
	select accounts 
		account 1, 2, 3,q			
			int age
			int sex
			Printf select Run or Setup
			if Setup then printf enter age
			getchar=>age
			Printf select sex (m,f)
			getchar=>sex
			if sex=m then thr1=220-age
			else thr1=226-age
*/			
    printf("start working out\n");
    printf("work out if you wish to stop watching TV and save any time left press q");

    p1=p;
    //I need the program to wait 1 minute
    //time_t start,end;
    //start=clock();//predefined  function in c
    //after the user defined function does its work
    //end=clock();
    system("ping -n 60 127.0.0.1");
    //t=(end-start)/CLOCKS_PER_SEC;
    //or
    
    /*  //this section won't work without some sort of semaphore 
    scanf("%s",&selection);//q then return to main 

    if strcmp(selection,"q")
        break;
    */

    if (p >thr[acct])
    {
       tvon=1;
       timesave[acct]++;
       p1=p;
       printf("Congradulations in Target Heart Rate zone.  You earned 1 minute extra time that you can save or use at the end of your work out/n");
       workoutbegin(acct);
    }
    
    else if (p > p1)
    {
        tvon=1;
        printf("You may continue to watch tv, but you are not yet in your Target Heart Rate zone.\n");
        p1 =p;
        workoutbegin(acct);
    }
    
    else if (p0)
    {
        tvon=1;
        timesave[acct]--;
        p1 =p;
        printf("You are watching on borrowed time.  Time is being taken from your savings.\n");
        workoutbegin(acct);
    }

    else if (p
    {
        printf ("YOU'RE NOT WORKING OUT HARD ENOUGH.  WORK OUT HARDER OR THE TV WILL TURN OFF IN ONE MINUTE!\n");
    
        system("ping -n 60 127.0.0.1");
        
        if (p<p1)>
        printf ("Sorry workout was inefficient and you are out of saved time. No TV for you.\n");
        tvon=0;
        //account select
    }
}


int main(int argc, char *argv[])
{
    account();
    
    return 0;
    system("PAUSE");	
}

[EDIT]
Added tags for code formatting. Even in the unedited version some text at p and p1 conditions is wrong (probably destroyed when pasting).
[/EDIT]

Tags: C