How do you print from within a function?

[varungadre]

I do not know what I am doing wrong here:

#include <stdio.h>



int gcdlcm(int *a, int *b); //Prototype Variable

void main()
{
int a;
int b;

printf("Enter first number: ");
scanf("%d", &a);
printf("\nEnter second number: ");
scanf("%d", &b);
gcdlcm(&a, &b);
}

int gcdlcm(int *a, int *b)
{


int gcd1 = *a;
int gcd2 = *b;

int lcm1 = *a;
int lcm2 = *b;
while( gcd2 != 0)
{
int m = gcd1 % gcd2;
gcd1 = gcd2;
gcd2 = m;
}
int LCM = ((lcm1 * lcm2) / gcd1);
printf("GCD = %d", gcd1);
printf("LCM = %d", LCM);
return gcd1;
}

Everytime it compiles fine. But when I run it in debug mode(VS2008) it wont print the printf's in the function. Any help would be greatly appreciated.

[Nandor]

#include <stdio.h>

void gcdlcm(int a, int b); //Prototype Variable

void main()
{
int a;
int b;

printf("Enter first number: ");
scanf("%d", &a);
printf("\nEnter second number: ");
scanf("%d", &b);
gcdlcm(a, b);
}

void gcdlcm(int a, int b)
{
int gcd1 = a;
int gcd2 = b;

int lcm1 = a;
int lcm2 = b;
while( gcd2 != 0)
{
int m = gcd1 % gcd2;
gcd1 = gcd2;
gcd2 = m;
}
int LCM = ((lcm1 * lcm2) / gcd1);
printf("GCD = %d \n", gcd1);
printf("LCM = %d", LCM);
}

It works fine for me

[bnbertha]

I'm not familiar with VS2008 but in VS2005 the printfs come out on a separate command window, not in the IDE. It may seem a bit obvious but are you looking for them in the right place?

[varungadre]

Nandor, could you possibly post the output that is given. That would really help alot.

[Nandor]

Enter the first number:345
Enter the second number:213
GDC=3
LCM=24495

Your mistake was probably at the pointers...You referenced and dereferenced the