feat(added grading students question from hackerrank)

Task 1/Grading_students/question.md

@@ -0,0 +1,9 @@
+HackerLand University has the following grading policy:
+
+Every student receives a  in the inclusive range from  to .
+Any  less than  is a failing grade.
+Sam is a professor at the university and likes to round each student's  according to these rules:
+
+If the difference between the  and the next multiple of  is less than , round  up to the next multiple of .
+If the value of  is less than , no rounding occurs as the result will still be a failing grade.
+

Task 1/Grading_students/solution.cpp

@@ -0,0 +1,31 @@
+#include<iostream>
+#include<bits/stdc++.h>
+
+using namespace std ;
+
+int main(){
+    int n , i;
+    //cout<<"enter the number of students :: ";
+    cin>>n;
+
+    int g[n];
+    for(i=0;i<n;i++){
+        cin>>g[i];
+    }
+
+    for(i=0;i<n;i++){
+        if(g[i]>=38){
+            if((g[i]%5)==3){
+                g[i]=g[i]+2;
+            }
+            if((g[i]%5==4)){
+                g[i]=g[i]+1;
+            }
+        }
+    }
+
+    for(i=0;i<n;i++){
+        cout<<g[i]<<endl;
+    }
+    return 0;
+}