3. Write a OpenMP program to calculate n Fibonacci numbers using tasks.
COMMAND:
- Create:
gedit prg3.c - Compile:
gcc -fopenmp prg3.c -o prg3 - Run:
export OMP_NUM_THREADS=4 && ./prg3
PROGRAM:
#include <stdio.h>
#include <omp.h>
int fib(int n) {
int x, y;
if (n < 2)
return n;
#pragma omp task shared(x)
x = fib(n - 1);
#pragma omp task shared(y)
y = fib(n - 2);
#pragma omp taskwait
return x + y;
}
int main() {
int n;
printf("Enter number of Fibonacci terms: ");
scanf("%d", &n);
printf("Fibonacci Series:\n");
for (int i = 0; i < n; i++) {
int result;
#pragma omp parallel
{
#pragma omp single
{
result = fib(i);
}
}
printf("%d ", result);
}
printf("\n");
return 0;
}OUTPUT:
