diff --git a/CPP/4.cpp b/CPP/4.cpp
new file mode 100644
index 0000000..615bfb6
--- /dev/null
+++ b/CPP/4.cpp
@@ -0,0 +1,59 @@
+vector<string> Solution::prettyJSON(string A) {
+    vector<string> v;
+    int q=0;
+    for(int i=0; i<A.size(); i++)
+    {
+        string p="";
+        if( A[i]=='}' || A[i]==']')
+        {
+            q--;
+        }
+        for(int k=0;k<q;k++)
+        {
+            p='\t'+p;
+        }
+        if(A[i]=='{' || A[i]=='[')
+        {
+            p+=A[i];
+            q++;
+        }
+        else if( A[i]=='}' || A[i]==']')
+        {
+            p+=A[i];
+           if(i!=A.size()-1 && A[i+1]==',')
+           {
+               p+=A[i+1];
+                i++;
+           }
+        }
+        else
+        {
+            int j;
+            for(j=i;j<A.size();j++)
+            {
+                if(A[j]=='{' || A[j]=='[' || A[j]=='}' || A[j]==']')
+                {
+                    j--;
+                    break;
+                }
+                else if(A[j]==',')
+                {
+                    p+=A[j];
+                    i=j;
+                    break;
+                }
+                else if(A[j]==':' && (A[j+1]=='{' || A[j+1]=='['))
+                {
+                    p+=A[j];
+                    i=j;
+                    break;
+                }
+                else
+                p+=A[j];
+            }
+            i=j;
+        }
+        v.push_back(p);
+    }
+    return v;
+}