Delete lab questions

main
Hammy 3 years ago
parent 3968765c35
commit 81fc21676b

@ -1,38 +0,0 @@
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#define NUM_THREADS 20
void *fizzbuzz(void *arg) {
int *number = (int *) arg;
if (*number % 3 == 0) {
printf("%d -> %s\n", *number, "fizz");
} else if (*number % 5 == 0) {
printf("%d -> %s\n", *number, "buzz");
} else {
printf("%d -> %s\n", *number, "no div");
}
pthread_exit(NULL);
}
int main() {
pthread_t threads[20];
int nums[20];
int i;
for (i = 0; i < NUM_THREADS; i++) {
nums[i] = i + 1;
pthread_create(&threads[i], NULL, fizzbuzz, &nums[i]);
}
for (i = 0; i < NUM_THREADS; i++) {
char *returnedStr;
pthread_join(threads[i], (void **) &returnedStr);
}
pthread_exit(NULL);
}

@ -1,44 +0,0 @@
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h> // gives us sleep(). Replace with windows.h for compiling on windows!
#define NUM_THREADS 20
typedef struct _threadinfo {
bool * keepRunning;
int * total;
} threadinfo_t;
void * getInput(void * arg) {
threadinfo_t * args = (threadinfo_t *) arg;
int currInput;
printf("Input as much as you can --- you have 10 seconds!\n");
while (*args->keepRunning) {
printf("Add another number! : ");
scanf("%d", &currInput);
*args->total += currInput;
}
pthread_exit(NULL);
}
int main() {
pthread_t thread;
bool keepRunning = true;
int total = 0;
threadinfo_t args = {&keepRunning, &total};
pthread_create(&thread, NULL, getInput, &args);
sleep(10); // sleep for 10 secs
keepRunning = false;
pthread_join(thread, NULL);
printf("\n\nYou managed to enter a total of: %d!\n", total);
pthread_exit(NULL);
}

@ -1,8 +0,0 @@
#include <unistd.h>
// the rest is up to you! Implement a program which starts _two_ pthreads.
// One reads input from the user, and adds numbers to a total.
// the other prints the current total value every 3 seconds.
// After 30 seconds, the main thread sets a bool to false that signals
// to both threads that they should join, just like in 3.c.
// You can use sleep(int seconds) from unistd.h to make your threads sleep.
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