Added a C code

Interval Scheduling.C

@@ -0,0 +1,60 @@
+#include <iostream>
+#include <utility>
+#include <tuple>
+#include <vector>
+#include <algorithm>
+
+const int jobCnt = 10;
+
+// Job start times
+const int startTimes[] = { 2, 3, 1, 4, 3, 2, 6, 7, 8, 9};
+
+// Job end times
+const int endTimes[]   = { 4, 4, 3, 5, 5, 5, 8, 9, 9, 10};
+
+using namespace std;
+
+int main()
+{
+    vector<pair<int,int>> jobs;
+
+    for(int i=0; i<jobCnt; ++i)
+        jobs.push_back(make_pair(startTimes[i], endTimes[i]));
+
+    // step 1: sort
+    sort(jobs.begin(), jobs.end(),[](pair<int,int> p1, pair<int,int> p2) 
+                                     { return p1.second < p2.second; });
+
+    // step 2: empty set A
+    vector<int> A;
+
+    // step 3:
+    for(int i=0; i<jobCnt; ++i)
+    {
+        auto job = jobs[i];
+        bool isCompatible = true;
+
+        for(auto jobIndex : A)
+        {
+            // test whether the actual job and the job from A are incompatible
+            if(job.second >= jobs[jobIndex].first &&
+               job.first  <= jobs[jobIndex].second)
+            {
+                isCompatible = false;
+                break;
+            }
+        }
+
+        if(isCompatible)
+            A.push_back(i);
+    }
+
+    //step 4: print A
+    cout << "Compatible: ";
+
+    for(auto i : A)
+        cout << "(" << jobs[i].first << "," << jobs[i].second << ") ";
+    cout << endl;
+
+    return 0;
+}