C语言结构体如何相互调用函数？3种实现方法详解
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c澶嶅埗// 瀹氫箟璇剧▼缁撴瀯浣?/span> struct Course { int credit; }; // 鏌ヨ瀛﹀垎鐨勫嚱鏁?/span> int getCredit(struct Course *c) { return c->credit; } // 瀛︾敓缁撴瀯浣撹皟鐢ㄥ嚱鏁?/span> struct Student { char name[20]; void (*checkCredit)(struct Course *); }; int main() { struct Course math = {4}; struct Student xiaoming; // 鐩存帴鎶婅绋嬪璞′紶缁欏鐢?/span> printf("楂樻暟鏈?d涓鍒?, getCredit(&math)); }
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c澶嶅埗// 缁欒绋嬬粨鏋勪綋瑁呬釜"鎶€鑳? struct Course { int credit; int (*getCredit)(struct Course*); }; // 瀛︾敓缁撴瀯浣撴彛鐫€璇剧▼鎸囬拡 struct Student { struct Course *myCourse; }; int main() { struct Course math = { .credit = 4, .getCredit = &getCredit // 鎶婂嚱鏁板湴鍧€瑁呰繘鍘?/span> }; struct Student xiaoming = {&math}; printf("灏忔槑閫夌殑璇炬湁%d瀛﹀垎", xiaoming.myCourse->getCredit(xiaoming.myCourse)); }
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c澶嶅埗// 璇剧▼绠＄悊涓粙 struct CourseManager { struct Course *courses[10]; int count; }; // 閫氳繃涓粙鏌ヨ int queryCredit(struct CourseManager *mgr, int courseId) { return mgr->courses[courseId]->credit; } // 瀛︾敓鐩存帴鎵句腑浠?/span> struct Student { struct CourseManager *mgr; int selectedCourse; }; int main() { struct Course math = {4}; struct CourseManager mgr = { .courses[0]=&math, .count=1 }; struct Student xiaoming = { &mgr, 0 }; printf("瀛﹀垎鏄?d", queryCredit(xiaoming.mgr, xiaoming.selectedCourse)); }
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