【问题标题】:double pointer problem error passing through functions双指针问题错误通过函数
【发布时间】:2019-07-18 10:04:28
【问题描述】:

我有一个二维数组,我想通过一个函数来传递

char blendModeOptions[18][16]={"Normal","Darken","Multiply","Color Burn","Linear Burn","Lighten","Screen","Color Dodge","Linear Dodge","Overlay","Soft Light","Hard Light",
    "Vivid Light","Linear Light","Pin Light","Difference","Exclusion","Hue"};

blendMode = KIT_CreateSelectOption(blendModeOptions,18,&blendModeRect);

而函数的声明是:

KIT_SelectOption * KIT_CreateSelectOption(char ** options,int size ,SDL_Rect * rect);

我收到警告:

note: expected 'char **' but argument is of type 'char (*)[16]'

在函数内部,我通过这个参数KIT_AddOption(box,options[i]);调用函数int KIT_AddOption(KIT_SelectOption *box, const char * option);

当我在KIT_AddOption的这行代码中时,我的程序崩溃了

strcpy(opt->name,option);

我试过char * option[16]而不是char ** option,但它不起作用。

【问题讨论】:

标签: c++ c pointers double-pointer


【解决方案1】:

您需要将数组定义为指针数组,而不是二维字符数组。

char *blendModeOptions[]={"Normal","Darken","Multiply","Color Burn","Linear Burn","Lighten","Screen","Color Dodge","Linear Dodge","Overlay","Soft Light","Hard Light",
"Vivid Light","Linear Light","Pin Light","Difference","Exclusion","Hue"};

【讨论】:

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