Today I have learn about Pointers - because function can only return one data.
int i = 3; [address of variable : &i = 65524]
[value at address : *(&i) = 3 ]
# the sign *( ) si called pointers.
declaring pointer - pointer variables:
int *alpha ; //integer pointer
char *ch ; // char pointer
float *s ; //float pointer
Example of call by reference:
void main (void)
{
int a = 10, b = 20;
swap (&a, &b);
printf ("a = %d, b=%d\n", a, b);
}
void swap ( int *x, int *y)
{
int t;
swap (&a, &b);
t=*x;
*x=*y;
*y=t;
}
And am doing some exercise :
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| Get radius, calculate area and parameter using one function only. |
Also am doing this exercise :
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| Add caption |
