电子商务网站建设读书报告,Sierra wordpress,网页版微信二维码几分钟失效,简易签名设计一笔签本文使用了malloc、realloc、calloc等和内存开辟有关的函数。 文章目录 前言 二、头文件 三、主界面 四、通讯录功能函数 1.全代码 2.增加联系人 3.删除联系人 4.查找联系人 5.修改联系人 6.展示联系人 7.清空联系人 8.退出通讯录 总结 前言
为了使用通讯录时#xff0c;可以… 本文使用了malloc、realloc、calloc等和内存开辟有关的函数。 文章目录 前言 二、头文件 三、主界面 四、通讯录功能函数 1.全代码 2.增加联系人 3.删除联系人 4.查找联系人 5.修改联系人 6.展示联系人 7.清空联系人 8.退出通讯录 总结 前言
为了使用通讯录时可以随时调整大小所以使用动态开辟内存函数写通讯录可增加联系人容量。
动态开辟函数即在内存的栈区开辟空间所以使用完毕后需要释放内存空间。 一、通讯录运行图 二、头文件
#includestdio.h
#includestring.h
#includestdlib.h
#includeassert.h
#includestdlib.h#define Max 10enum function
{quit,increase,delete,find,revise,show,empty,sort
};typedef struct Person
{char name[20];size_t age;char sex[5];char address[30];char phone[12];
}person;//动态
typedef struct contact
{person *per;size_t sz;//通讯录已有人员个数size_t ContactMax;//通讯录当前最大容量
}contact;void init_contact(contact* con);void increase_contact(contact* con);void delete_contact(contact* con);//return -1(no) / address(yes)
int find1(const contact** con, size_t choice);
void find_contact(const contact* con);void revise_contact(contact* con);void show_contact(const contact* con);
//排序通讯录
void sort_contact(contact* con);
//销毁通讯录
void destroy_contact(contact* con);三、主界面
#include contact.hvoid menu1()
{printf(**************************************\n);printf(******* Simplified address book ******\n);printf(******* 1 increase contact ******\n);printf(******* 2 delete contact ******\n);printf(******* 3 find contact ******\n);printf(******* 4 revise contact ******\n);printf(******* 5 Show all contacts ******\n);printf(******* 6 Empty all contacts ******\n);printf(******* 7 Sort by name ******\n);printf(******* 0 Quit Contacts ******\n);printf(**************************************\n);
}void test()
{//create contactscontact con;//initialize contactsinit_contact(con);size_t choice 0;do{menu1();printf(Enter the feature options you need:);scanf(%u, choice);switch (choice){case increase:increase_contact(con);break;case delete:delete_contact( con );break;case find:find_contact(con);break;case revise:revise_contact(con);break;case show:show_contact(con);break;case empty:init_contact(con);break;case sort:sort_contact(con);break;case quit:destroy_contact(con);printf(Exiting Contacts...\n);break;default:printf(You entered the wrong number, please re-enter it.\n);break;}} while (choice);printf(Exited Contacts.\n);}int main()
{test();return 0;
}
四、通讯录功能函数
1.全代码
#includecontact.hvoid menu2()
{system(cls);printf(1 name \t 2 age\n);printf(3 sex \t 4 address\n);printf(5 phone\n);printf(Please select:);
}//动态
void init_contact(contact* con)
{assert(con);// per sz ContactMaxcon-sz 0;person* p (person*)calloc(Max, sizeof(person));if (p NULL){perror(init_contact::calloc);return;}con-per p;con-ContactMax Max;
}void tune(contact* con)
{if (con-sz con-ContactMax){person *p (person *)realloc(con-per, (con-ContactMax Max) * sizeof(person));if (p NULL){perror(tune::realloc);return;}con-per p;con-ContactMax Max;}
}//动态开辟
void increase_contact(contact* con)
{assert(con);//检测当前通讯录是否需要增容tune(con);printf(name:);scanf(%s, (con-per[con-sz].name));printf(age:);scanf(%u, (con-per[con-sz].age));printf(sex:);scanf(%s, (con-per[con-sz].sex));printf(address:);scanf(%s, (con-per[con-sz].address));printf(phone:);scanf(%s, (con-per[con-sz].phone));(con-sz);
}void delete_contact(contact* con)
{assert(con);menu2();size_t choice 0;size_t result 0;while (1){scanf(%u, choice);if (choice 5 choice 1){result find1(con, choice);break;}else{printf(Your input is incorrect, please re-enter it:);}}if (result ! -1){char true[5] { 0 };printf(Are you sure you want to delete %ss information?, con-per[result].name);printf(yes/no:);scanf(%s, true);if (!strcmp(true, yes)){if ( con-sz ){memmove(con-per[result].name, con-per[(con-sz) - 1].name, sizeof(con-per[0]));}else{memset(con-per[result].name, 0, sizeof(con-per[0]));}(con-sz)--;printf(The deletion was successful, thanks for using!\n); }else{printf(Delete failed, please try again!\n);}}else{printf(Delete failed, please try again!\n);}
}int find1(const contact** con, size_t choice)
{assert(con);size_t i 0;char sample1[30] { 0 };size_t sample2 0;printf(Please enter:);switch (choice){case 1:case 3:case 4:case 5:scanf(%s, sample1);break;case 2:scanf(%u, sample2);break;}switch (choice){case 1:while (i (*con)-sz){if (!strcmp(sample1, (*con)-per[i].name)){return i;}else{i;}}break;case 3:while (i (*con)-sz){if (!strcmp(sample1, (*con)-per[i].sex)){return i;}else{i;}}break;case 4:while (i (*con)-sz){if (!strcmp(sample1, (*con)-per[i].address)){return i;}else{i;}}break;case 5:while (i (*con)-sz){if (!strcmp(sample1, (*con)-per[i].phone)){return i;}else{i;}}break;case 2:while (i (*con)-sz){if (sample2 (*con)-per[i].age){return i;}else{i;}}break;}return -1;
}void find_contact(const contact* con)
{assert(con);menu2();size_t choice 0;size_t result 0;while (1){scanf(%u, choice);if (choice 5 choice 1){result find1(con, choice);break;}else{printf(Your input is incorrect, please re-enter it:);}}if (result ! -1){printf(Found, the basic information of the contact is:);printf(name:%-20s\tage:%-4d\tsex:%-5s\taddress:%-30s\tphone:%-12s\n,con-per[result].name,con-per[result].age,con-per[result].sex,con-per[result].address,con-per[result].phone);}else{printf(Didnt find it!\n);}}void revise_contact(contact* con)
{assert(con);menu2();size_t choice 0;size_t result 0;while (1){scanf(%u, choice);if (choice 5 choice 1){result find1(con, choice);break;}else{printf(Your input is incorrect, please re-enter it:);}}if (result ! -1){char true[5] { 0 };printf(Are you sure you want to revise %ss information?, con-per[result].name);printf(yes/no:);scanf(%s, true);if (!strcmp(true, yes)){menu2();printf(Please enter the option you want to modify:);scanf(%u, choice);char sample1[30] { 0 };size_t sample2 0;printf(Please enter:);switch (choice){case 1:case 3:case 4:case 5:scanf(%s, sample1);break;case 2:scanf(%u, sample2);break;}switch (choice){case 1:memmove(con-per[result].name, sample1, sizeof(con-per[0].name));break;case 3:memmove(con-per[result].name, sample1, sizeof(con-per[0].sex));break;case 4:memmove(con-per[result].name, sample1, sizeof(con-per[0].address));break;case 5:memmove(con-per[result].name, sample1, sizeof(con-per[0].phone));break;case 2:con-per[result].age sample2;break;}printf(The modification is complete, thanks for using!\n);}else{printf(Revise failed, please try again!\n);}}else{printf(Revise failed, please try again!\n);}
}void show_contact(const contact* con)
{assert(con);if ( con-sz ){size_t i 0;for (; i (con-sz); i){printf(name:%-20s\tage:%-4d\tsex:%-5s\taddress:%-30s\tphone:%-12s\n,con-per[i].name, con-per[i].age, con-per[i].sex,con-per[i].address, con-per[i].phone);}}else{printf(There is no contact information in the address book!\n);}
}int cmp_char(const void* str1, const void* str2)
{return strcmp(((person*)str1)-name, ((person*)str2)-name);
}void sort_contact(contact* con)
{qsort(con - per[0].name, con - sz, sizeof(con - per[0]), cmp_char);
}void destroy_contact(contact* con)
{free(con-per);con-per NULL;con-ContactMax 0;con-sz 0;con NULL;
}
2.增加联系人
使用realloc()调整通讯录大小。
联系人信息图为 void tune(contact* con)
{if (con-sz con-ContactMax){person *p (person *)realloc(con-per, (con-ContactMax Max) * sizeof(person));if (p NULL){perror(tune::realloc);return;}con-per p;con-ContactMax Max;}
}//动态开辟
void increase_contact(contact* con)
{assert(con);//检测当前通讯录是否需要增容tune(con);printf(name:);scanf(%s, (con-per[con-sz].name));printf(age:);scanf(%u, (con-per[con-sz].age));printf(sex:);scanf(%s, (con-per[con-sz].sex));printf(address:);scanf(%s, (con-per[con-sz].address));printf(phone:);scanf(%s, (con-per[con-sz].phone));(con-sz);
}
3.删除联系人
通过选择联系人的某种信息例如姓名、年龄来查找需要删除的联系人找到之后确认删除该联系人。
例如: void delete_contact(contact* con)
{assert(con);menu2();size_t choice 0;size_t result 0;while (1){scanf(%u, choice);if (choice 5 choice 1){result find1(con, choice);break;}else{printf(Your input is incorrect, please re-enter it:);}}if (result ! -1){char true[5] { 0 };printf(Are you sure you want to delete %ss information?, con-per[result].name);printf(yes/no:);scanf(%s, true);if (!strcmp(true, yes)){if ( con-sz ){memmove(con-per[result].name, con-per[(con-sz) - 1].name, sizeof(con-per[0]));}else{memset(con-per[result].name, 0, sizeof(con-per[0]));}(con-sz)--;printf(The deletion was successful, thanks for using!\n); }else{printf(Delete failed, please try again!\n);}}else{printf(Delete failed, please try again!\n);}
}
4.查找联系人
通过联系人基础信息查找联系人。
int find1(const contact** con, size_t choice)
{assert(con);size_t i 0;char sample1[30] { 0 };size_t sample2 0;printf(Please enter:);switch (choice){case 1:case 3:case 4:case 5:scanf(%s, sample1);break;case 2:scanf(%u, sample2);break;}switch (choice){case 1:while (i (*con)-sz){if (!strcmp(sample1, (*con)-per[i].name)){return i;}else{i;}}break;case 3:while (i (*con)-sz){if (!strcmp(sample1, (*con)-per[i].sex)){return i;}else{i;}}break;case 4:while (i (*con)-sz){if (!strcmp(sample1, (*con)-per[i].address)){return i;}else{i;}}break;case 5:while (i (*con)-sz){if (!strcmp(sample1, (*con)-per[i].phone)){return i;}else{i;}}break;case 2:while (i (*con)-sz){if (sample2 (*con)-per[i].age){return i;}else{i;}}break;}return -1;
}void find_contact(const contact* con)
{assert(con);menu2();size_t choice 0;size_t result 0;while (1){scanf(%u, choice);if (choice 5 choice 1){result find1(con, choice);break;}else{printf(Your input is incorrect, please re-enter it:);}}if (result ! -1){printf(Found, the basic information of the contact is:);printf(name:%-20s\tage:%-4d\tsex:%-5s\taddress:%-30s\tphone:%-12s\n,con-per[result].name,con-per[result].age,con-per[result].sex,con-per[result].address,con-per[result].phone);}else{printf(Didnt find it!\n);}}5.修改联系人
先查找再修改。
可以修改联系人的任一信息。
void revise_contact(contact* con)
{assert(con);menu2();size_t choice 0;size_t result 0;while (1){scanf(%u, choice);if (choice 5 choice 1){result find1(con, choice);break;}else{printf(Your input is incorrect, please re-enter it:);}}if (result ! -1){char true[5] { 0 };printf(Are you sure you want to revise %ss information?, con-per[result].name);printf(yes/no:);scanf(%s, true);if (!strcmp(true, yes)){menu2();printf(Please enter the option you want to modify:);scanf(%u, choice);char sample1[30] { 0 };size_t sample2 0;printf(Please enter:);switch (choice){case 1:case 3:case 4:case 5:scanf(%s, sample1);break;case 2:scanf(%u, sample2);break;}switch (choice){case 1:memmove(con-per[result].name, sample1, sizeof(con-per[0].name));break;case 3:memmove(con-per[result].name, sample1, sizeof(con-per[0].sex));break;case 4:memmove(con-per[result].name, sample1, sizeof(con-per[0].address));break;case 5:memmove(con-per[result].name, sample1, sizeof(con-per[0].phone));break;case 2:con-per[result].age sample2;break;}printf(The modification is complete, thanks for using!\n);}else{printf(Revise failed, please try again!\n);}}else{printf(Revise failed, please try again!\n);}
}
6.展示联系人
展示所有联系人及其所有信息。
void show_contact(const contact* con)
{assert(con);if ( con-sz ){size_t i 0;for (; i (con-sz); i){printf(name:%-20s\tage:%-4d\tsex:%-5s\taddress:%-30s\tphone:%-12s\n,con-per[i].name, con-per[i].age, con-per[i].sex,con-per[i].address, con-per[i].phone);}}else{printf(There is no contact information in the address book!\n);}
}
7.清空联系人
又名初始化通讯录。
重新向内存申请一片空间存储联系人信息。
void init_contact(contact* con)
{assert(con);// per sz ContactMaxcon-sz 0;person* p (person*)calloc(Max, sizeof(person));if (p NULL){perror(init_contact::calloc);return;}con-per p;con-ContactMax Max;
}
8.退出通讯录
通过free()释放内存栈区的空间避免内存泄露。
void destroy_contact(contact* con)
{free(con-per);con-per NULL;con-ContactMax 0;con-sz 0;con NULL;
} 总结
在使用完内存函数之后一定一定要记得释放空间哦~
上述代码展示就是整个动态通讯录的全部啦如果你有兴趣想要了解可以通过C_Ccpp/C_study/contact at main · Yjun6/C_Ccpp (github.com)找到它们。
