else if(program->type=="Input"){
        std::cout << "input " << destReg << std::endl;
    }
    else if(program->type=="Output"){
        std::string src = makeName("src");
        CompileRec (src, program->branches[0]);
        std::cout << "output " << src << std::endl;
    }
    else if(program->type=="LessThan"){
        std::string src1 = makeName("src");
        std::string src2 = makeName("src");
        CompileRec (src1, program->branches[0]);
        CompileRec (src2, program->branches[1]);
        std::cout << "lt " << destReg << " " << src1 << " " << src2 << std::endl;
    }
    else if(program->type=="Add"){
        std::string src1 = makeName("src");
        std::string src2 = makeName("src");
        CompileRec (src1, program->branches[0]);
        CompileRec (src2, program->branches[1]);
        std::cout << "add " << destReg << " " << src1 << " " << src2 << std::endl;
    }
    else if(program->type=="Sub"){
        std::string src1 = makeName("src");
        std::string src2 = makeName("src");
        CompileRec (src1, program->branches[0]);
        CompileRec (src2, program->branches[1]);
        std::cout << "sub " << destReg << " " << src1 << " " << src2 << std::endl;
    }
    else if(program->type=="Assign"){
        std::string src = makeName("src");
        CompileRec(src, program->branches[0]);
        std::cout << "const " << destReg << " " << src << std::endl;
    }
    else if(program->type=="If"){
        std::string src1 = makeName("src");
        std::string src2 = makeName("src");
        std::string else_lab = makeName("label");
        std::string end_lab = makeName("label");

        //check for true or false
        CompileRec(src1, program->branches[0]);
        std::cout << "beq " << src1 << "$0 " << else_lab << std::endl;

        //default case is to evaluate true case and then skip to end
        CompileRec(src2, program->branches[1]);
        std::cout << "beq $0 $0 " << end_lab << std::endl;

        //otherwise evaluate false case
        std::cout << ":" << else_lab << std::endl;
        CompileRec(src2, program->branches[1]);

        //endlabel for skipping false case
        std::cout << ":" << end_lab << std::endl;
    }
    else if(program->type=="While"){
        std::string condition = makeName("src");
        std::string src = makeName("src");
        std::string start_lab = makeName("lab");
        std::string end_lab = makeName("lab");

        //set start label to branch back to while condition == true
        std::cout << ":" << start_lab << std::endl;
        CompileRec(condition, program->branches[0]);
        //if condition false, branch to end
        std::cout << "beq " << condition << "$0 " << end_lab << std::endl;

        //execute main clause and branch back to checking condition again
        CompileRec(src, program->branches[1]);
        std::cout << "beq $0 $0 " << start_lab << std::endl;

        std::cout << ":" << end_lab << std::endl;

    }