int main(){
printf("Lucas numbers:\n");
lucas_numbers(100);
printf("\nTwin primes:\n");
twin_primes(10);
return 0;
}
int main(){
int choice;
do{
printf("\n\n\n\tM\tE\tN\tU\n\t_\t_\t_\t_ \t\n\tType in [1] for |Lucas Numbers|\n\tType in [2] for |Twin Primes|\n\tType in [0] for |EXIT|\t\n\n\n");
printf("\tEnter your choice: ");
scanf("%d",&choice);
space();
switch( choice ){
case 1:lucas_sequence(100);
break;
case 2:twin_primes();
break;
case 0: break;
default: return 1;
}
}while(choice != 0);
return 0;
}
int main()
{
float x, sum, a1, b1;
int i, a, b;
do
{
printf("Enter x, where 0 < x < 1!\n");
printf("Enter x:");scanf("%f", &x);
}while(x<0 || x>1);
a=3;
b=5;
sum=0;
do
{
if(twin_primes(a,b))
{
a1=a;
b1=b;
printf("%f %f", a1, b1);
sum=(1/a1)+(1/b1);
printf("%f", sum);
}
a=a + 2;
b=b + 2;
}while(sum>x);
printf("The twin primes are: %d, %d\n", a, b);
printf("%f", sum);
getchar();
getchar();
getchar();
}
