pointers A pointer in C is a way to share a memory address among different contexts (primarily functions). They are primarily used whenever a function needs to modify the content of a variable, of which it doesn't have ownership.
In order to access the memory address of a variable, , we need to prepend it with sign. E.g., &val returns the memory address of .
This memory address is assigned to a pointer and can be shared among various functions. E.g. will assign the memory address of to pointer . To access the content of the memory to which the pointer points, prepend it with a *. For example, *p will return the value reflected by and any modification to it will be reflected at the source ().
void increment(int *v) { (*v)++; }
int main() {
int a;
scanf("%d", &a);
increment(&a);
printf("%d", a);
return 0;
}
You have to complete the function void update(int *a,int *b), which reads two integers as argument, and sets with the sum of them, and with the absolute difference of them.
Input Format
Input will contain two integers, and , separated by a newline.
Output Format
You have to print the updated value of and , on two different lines.
P.S.: Input/ouput will be automatically handled. You only have to complete the void update(int *a,int *b) function.
Sample Input
4 5 Sample Output
9 1 Explanation