Page 28 - PROGRAMMING IN C_Neat

Example:
void incr(int*);

main()
a a {
int a;
20 10 10 a = 10;
*x *x incr(&a);
printf(“%d”, a);
} x = &a

void incr(int *x)
{
20 *x = *x + 10;
}

 incr() function’s formal argument is pointer, x.
 The address of a is passed to x.
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7. Explain function returning pointer with example. ***

Function returning Pointer:
 A function that returns a pointer is called function returning pointer.

Example:
int* add(int, int);

main()
{
int *sum;
sum = add(4, 6);
printf(“%d”, *sum);
}

int* add(int a, int b)
{
int *s;
*s = a + b;
return (s);
}

 add() function returns an integer pointer, s.
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