Create PointerHR.cpp

PointerHR.cpp

@@ -0,0 +1,62 @@
+/*
+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
+*/
+// SOLUTION
+#include <stdio.h>
+#include <cstdlib> 
+#include <iostream> 
+
+void update(int *a,int *b) {
+    // Complete this function    
+    *a = *a + *b ;
+    *b = abs(*a - *b - *b);
+}
+
+int main() {
+    int a, b;
+    int *pa = &a, *pb = &b;
+
+    scanf("%d %d", &a, &b);
+    update(pa, pb);
+    printf("%d\n%d", a, b);
+
+    return 0;
+}