C language question using pthread say I have the following: #import #define SIZE
ID: 3871921 • Letter: C
Question
C language question using pthread
say I have the following:
#import
#define SIZE 9
int funct1(int size, grid[SIZE][SIZE])
{
int sum = 0;
for(int i = 0; i < SIZE;i++)
{
for(int j = 0; j < SIZE;j++)
{
sum += grid[i][j]
}
}
}
int funct2(int size, grid[SIZE][SIZE])
{
int sum = 0;
for(int i = 0; i < SIZE;i++)
{
for(int j = 0; j < SIZE;j++)
{
sum += grid[i][j]
}
}
}
main()
{
pthread_t tid;
pthread_attr_t attr;
//How do I make a seperate thread for funct 1 and funct2 and get the return value for each of those returning functions?
//I also keep getting an error when I do pthread_create.
//The error says undefined reference to pthread_create
//THis is done in linux
}
Explanation / Answer
#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#define SIZE 9
int funct1(int size, grid[SIZE][SIZE]){
int sum = 0;
for(int i = 0; i < SIZE;i++)
{
for(int j = 0; j < SIZE;j++)
{
sum += grid[i][j]
}
}
printf("value in funct1 %d",sum)
return 0;
}
int funct2(int size, grid[SIZE][SIZE]){
int sum = 0;
for(int i = 0; i < SIZE;i++)
{
for(int j = 0; j < SIZE;j++)
{
sum += grid[i][j]
}
}
printf("value in funct2 %d",sum)
return 0;
}
main()
{
pthread_t thread1,thread2;
pthread_attr_t attr;
pthread_create(&thread1, NULL, funct1, "Foo");
pthread_create(&thread2, NULL, funct2, "Bar");
pthread_join(thread1, NULL);
pthread_join(thread2, NULL);
//How do I make a seperate thread for funct 1 and funct2 and get the return value for each of those returning functions?
//I also keep getting an error when I do pthread_create.
//The error says undefined reference to pthread_create
//THis is done in linux
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