Added some of the implementation but not complete #t51

src/intermediate_code.c

@@ -100,6 +100,8 @@ void emit_function_call(char* result, char* name){
 }
 void emit_return(char* value){
         emit_helper();
+        current->opcode = RETURN;
+        current->operand1 = look_up(cur, name);
         return;
 }
 void emit_reserve(char* result, char* type_name, int size){

src/intermediate_code.h

@@ -29,8 +29,10 @@ typedef enum {
         CGOTO,          // 5
         LESSTHEN,       // 6 rule 1 + 5
         EQUALTO,        // 6 rule 1 + 5
+        CALL,           // 7
         PARAM,          // 7
-        CALL            // 7
+        RETURN          // 7
+
 
 } Op;
 typedef struct Instruction {