Upgrade to C++

src/graph.cpp

@@ -1,5 +1,5 @@
-#include <stdlib.h>
-#include "graph.h"
+#include <cstdlib>
+#include "graph.hpp"
 
 int graph_reduce(struct adjmatrix *graph) {
    // TODO: Implement a function which checks if a process is blocked

src/main.cpp

@@ -3,9 +3,9 @@
    +-------------+---------+-----------------------+
    |              Created  2022-04-16              |
    +-----------------------------------------------+  */
-#include <stdio.h>      // printf
-#include "graph.h"      // Graph reduction/Knot detection, struct adjmatrix
-#include "read_input.h" //TODO: Read input in the associated C file, and provide an interface to that function here
+#include <cstdio>      // printf
+#include "graph.hpp"      // Graph reduction/Knot detection, struct adjmatrix
+#include "read_input.hpp" //TODO: Read input in the associated C file, and provide an interface to that function here
 
 
 int main(int argc, char** argv) {

src/read_input.cpp

@@ -1,7 +1,7 @@
 //TODO: Include C file IO header (stdio.h? Whatever it is)
-#include <stdio.h>
-#include "graph.h"      // struct adjmatrix
-#include "read_input.h" // read_input
+#include <cstdio>
+#include "graph.hpp"      // struct adjmatrix
+#include "read_input.hpp" // read_input
 
 #define MAX_LINE_LEN 1024