a point of threads to create multiple threads

[v3dant]

#include <pthread.h>
#incldue <stdlib.h>
#include <cstdio.h>
#include <calloc.h>


void *testing(void *threadid)
{
        printf("hello");
        pthread_exit(NULL);

}

int main()
{
        int c=5;
        pthread_t *thread1;
        thread1 = (pthread_t*)calloc(c, sizeof(pthread_t));
        pthread_create(thread1[0], NULL, testing, NULL);
        pthread_create(thread1[1], NULL, testing, NULL);
        pthread_create(thread1[2], NULL, testing, NULL);
        pthread_create(thread1[3], NULL, testing, NULL);
        pthread_create(thread1[4], NULL, testing, NULL);
        return 0;
        int x=0;
        for(x; x<c; x++)
        {
                pthread_join(thread1[t],NULL);
        }
        return 0;
}

i want to run a user specified number of threads however i get the following errors:
main.cc:9: error: `printf' undeclared (first use this function)
main.cc:9: error: (Each undeclared identifier is reported only once for each
function it appears in.)
main.cc: In function `int main()':
main.cc:18: error: `calloc' undeclared (first use this function)
main.cc:19: error: cannot convert `__pthread_st*' to `__pthread_st**' for
argument `1' to `int pthread_create(__pthread_st**, const pthread_attr_t*,
void*(*)(void*), void*)'
main.cc:20: error: cannot convert `__pthread_st*' to `__pthread_st**' for
argument `1' to `int pthread_create(__pthread_st**, const pthread_attr_t*,
void*(*)(void*), void*)'
main.cc:21: error: cannot convert `__pthread_st*' to `__pthread_st**' for
argument `1' to `int pthread_create(__pthread_st**, const pthread_attr_t*,
void*(*)(void*), void*)'
main.cc:22: error: cannot convert `__pthread_st*' to `__pthread_st**' for
argument `1' to `int pthread_create(__pthread_st**, const pthread_attr_t*,
void*(*)(void*), void*)'
main.cc:23: error: cannot convert `__pthread_st*' to `__pthread_st**' for
argument `1' to `int pthread_create(__pthread_st**, const pthread_attr_t*,
void*(*)(void*), void*)'
main.cc:28: error: `t' undeclared (first use this function)

[Salem]

Is this a question or a reply?

[itsme86]

Why did you call the file main.cc? That indicates that it's a C++ program. Try renaming it to main.c

[Dave Evans]

[QUOTE=v3dant]

#incldue <stdlib.h>
#include <cstdio.h>
#include <calloc.h>

#include


Regards,

Dave