原因:设置错误导致。解决方法:
如下参考:
1.首先,打开dev-c++,点击菜单栏中的“工具”,点击“编译选项”,打开编辑选项对话框。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/960a304e251f95ca3b9119cad9177f3e67095262?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2.然后我们选择复选框“在编译时仅连接到命令”和“在连接器命令行上连接以下命令”。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/314e251f95cad1c84cdf775b6f3e6709c93d5162?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3.在“在编译时添加以下命令”和“在连接器命令行上添加以下命令”复选框下的两个文本框中各输入“-g3”(不包括双引号)。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d0c8a786c9177f3e8950777160cf3bc79f3d5662?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4.点击“代码生成/优化”选项卡,点击“连接器”栏,点击“生成调试信息”栏右侧的复选框,将其更改为“是”,然后点击底部的“确定”。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/94cad1c8a786c9179267d945d93d70cf3bc75762?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5.最后,重启dev-c++来解决问题,如下图所示。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/241f95cad1c8a786254ec1727709c93d70cf5062?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)