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warning: passing argument 3 of ‘pthread_create’ from incompatible pointer type

Hello there,

I cant understand why this warning: "passing argument 3 of ‘pthread_create’ from incompatible pointer type" occurs, can i get some help plz.Here is my code

Code:

#include <stdio.h>

#include <stdlib.h>

#include <pthread.h>



int globalVariable;



void *stringManager( char *param );



int main( int argc, char *argv[] )

{

        if(argc!=2){



                fprintf(stderr,"usage:a.out<integer value>\n");



                return -1;



        }



        pthread_t tid;

        pthread_attr_t attr;

        

        pthread_attr_init(&attr);



            pthread_create(&tid,&attr,stringManager,argv[1]);



        pthread_join(tid,NULL);

        



        printf("Global variable is : %d\n", globalVariable);



        return 0;

}

void *stringManager( char *param )

{

        int i;

        globalVariable=0;



        for( i=0; i<30; i++ )

        {

                printf("%s\n",param);

                globalVariable = globalVariable + 1;

        }

        pthread_exit(0);

}

Hi

Change it to:

void *stringManager( void *param );

This will get rid of the warning. You can then typecast param to char pointer inside the function.