Programming Forums > Application Development > C++

RosdaHale · Dec 3rd, 2004, 4:12 PM

In my program i need a time limit for the user to input as answer. (the user input will be an integer or a char value), how do i go about putting the cin statement In to a timed state, if the user answers the question in the time then.....if not then........

Infinite Recursion · Dec 3rd, 2004, 4:27 PM

This should put you on the right direction:

The functions you are looking for are part of time.h, be sure
to include that header file.

(Toggle Plain Text)

/* clock example: countdown */
#include <stdio.h>
#include <time.h>

void wait ( int seconds )
{
 *clock_t endwait;
 *endwait = clock () + seconds * CLK_TCK;
 *while (clock() < endwait) {}
}

int main ()
{
 *int n;
 *printf ("Starting countdown...\n");
 *for (n=10; n>0; n--)
 *{
 * *printf ("%d\n",n);
 * *wait (1);
 *}
 *printf ("FIRE!!!\n");
 *return 0;
}

Output:
Starting countdown...
10
9
8
7
6
5
4
3
2
1
FIRE!!!

Also look at:

(Toggle Plain Text)

/* difftime example */
#include <stdio.h>
#include <time.h>

int main ()
{
 time_t start,end;
 char szInput [256];
 double dif;

 time (&start);
 printf ("Please, enter your name: ");
 gets (szInput);
 time (&end);
 dif = difftime (end,start);
 printf ("Hi %s.\n", szInput);
 printf ("You have taken %.2lf seconds to type your name.\n", dif );
 
 return 0;
}

Dec 3rd, 2004, 4:27 PM	#2
Infinite Recursion Programming Guru Join Date: Jul 2004 Location: United States Posts: 3,467 Rep Power: 8	This should put you on the right direction: The functions you are looking for are part of time.h, be sure to include that header file. (Toggle Plain Text) /* clock example: countdown / #include <stdio.h> #include <time.h> void wait ( int seconds ) { clock_t endwait; endwait = clock () + seconds CLK_TCK; while (clock() < endwait) {} } int main () { int n; printf ("Starting countdown...\n"); for (n=10; n>0; n--) { printf ("%d\n",n); wait (1); } printf ("FIRE!!!\n"); return 0; } Output: Starting countdown... 10 9 8 7 6 5 4 3 2 1 FIRE!!! /* clock example: countdown / #include <stdio.h> #include <time.h> void wait ( int seconds ) { clock_t endwait; endwait = clock () + seconds CLK_TCK; while (clock() < endwait) {} } int main () { int n; printf ("Starting countdown...\n"); for (n=10; n>0; n--) { printf ("%d\n",n); wait (1); } printf ("FIRE!!!\n"); return 0; } Output: Starting countdown... 10 9 8 7 6 5 4 3 2 1 FIRE!!! Also look at: (Toggle Plain Text) /* difftime example / #include <stdio.h> #include <time.h> int main () { time_t start,end; char szInput [256]; double dif; time (&start); printf ("Please, enter your name: "); gets (szInput); time (&end); dif = difftime (end,start); printf ("Hi %s.\n", szInput); printf ("You have taken %.2lf seconds to type your name.\n", dif ); return 0; } / difftime example */ #include <stdio.h> #include <time.h> int main () { time_t start,end; char szInput [256]; double dif; time (&start); printf ("Please, enter your name: "); gets (szInput); time (&end); dif = difftime (end,start); printf ("Hi %s.\n", szInput); printf ("You have taken %.2lf seconds to type your name.\n", dif ); return 0; } __________________ http://jasonpowers.net "There are a thousand hacking at the branches of evil to one who is striking at the root."

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Dec 3rd, 2004, 4:12 PM	#1
RosdaHale Newbie Join Date: Nov 2004 Posts: 15 Rep Power: 0	In my program i need a time limit for the user to input as answer. (the user input will be an integer or a char value), how do i go about putting the cin statement In to a timed state, if the user answers the question in the time then.....if not then........

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Programming Forums > Application Development > C++

Timed Input