We present ASMEC_C, an agent-based model of economy, to analyze macroeconomic policies. The economy is simplified, which consists of many families, many firms, a bank and a government; the states and the behaviors among the individual agents are heterogeneous; the individual agents interact in the markets; the individual agents can always adjust their behaviors in order to adapt the environment; macroeconomic dynamics emerges from the interactions among the individual agents. ASMEC_C is a artificial world ...