家庭收支软件(C语言)

家庭收支记账软件

完成的基本功能

1.菜单
2.收支明细
3.登记收入
4.登记支出
5.退出系统

#define _CRT_SECURE_NO_WARNINGS
#include
#include
#includestruct MyFamilyAccount {int flag &＃61; 0;//表示是否至少有一笔收支char details[3000];//明细double balance;//余额
};char key;//表示用户输入的菜单
int loop &＃61; 1;//控制是否退出菜单
char note[20];//收支说明
double money;//收入
char temp[100];//用于格式化收支,并拼接
char choice;//表示用户选择的y/n
//显示明细
void showDetails(struct MyFamilyAccount* myFamilyAccount) {if ((*myFamilyAccount).flag) {printf("%s", (*myFamilyAccount).details);}else {printf("\n当前没有任何收支明细,来一笔吧!");}return;
}//登记收入
void income(struct MyFamilyAccount* myFamilyAccount) {printf("本次收入金额:");scanf("%lf", &money);getchar();//吸收回车(*myFamilyAccount).balance &＃43;&＃61; money;printf("\n本次收入说明:");scanf("%s", note);//不需要&getchar();//吸收回车sprintf(temp, "\n收入\t%.2f\t\t%.2f\t\t%s", money, (*myFamilyAccount).balance, note);//拼接到detailsstrcat((*myFamilyAccount).details, temp);(*myFamilyAccount).flag &＃61; 1;return;
}//登记支出
void pay(struct MyFamilyAccount* myFamilyAccount) {printf("本次支出金额:");scanf("%lf", &money);getchar();if (money > (*myFamilyAccount).balance) {printf("\n余额不足!");return;}printf("\n本次支出说明:");scanf("%s", note);//不需要&getchar();//吸收回车(*myFamilyAccount).balance -&＃61; money;sprintf(temp, "\n支出\t%.2f\t\t%.2f\t\t%s", money, (*myFamilyAccount).balance, note);strcat((*myFamilyAccount).details, temp);(*myFamilyAccount).flag &＃61; 1;
}//退出
void myExit() {printf("\n你是否确定退出? y/n\n:");do {scanf("%c", &choice);getchar();if (choice &＃61;&＃61; &＃39;y&＃39; || choice &＃61;&＃61; &＃39;n&＃39;) {break;}printf("\n输入有误,请重新输入y/n\n:");} while (1);if (choice &＃61;&＃61; &＃39;y&＃39;) {loop &＃61; 0;}
}//显示菜单
void mainMenu(struct MyFamilyAccount* myFamilyAccount) {do {printf("\n\n----------------家庭收支记账软件-------------");printf("\n 1.收支明细");printf("\n 2.登记收入");printf("\n 3.登记支出");printf("\n 4.退出");printf("\n 请选择(1-4): ");scanf("%c", &key);getchar();//吸收回车switch (key) {case &＃39;1&＃39;:showDetails(myFamilyAccount);break;case &＃39;2&＃39;:income(myFamilyAccount);break;case &＃39;3&＃39;:pay(myFamilyAccount);break;case &＃39;4&＃39;:myExit();}} while (loop);printf("你退出了软件!");getchar();
}int main() {//创建一个结构体变量struct MyFamilyAccount myFamilyAccount;//初始化myFamilyAccount.flag &＃61; 0;myFamilyAccount.balance &＃61; 1000;//使用拷贝的方式赋值memset(myFamilyAccount.details, 3000, 0);strcpy(myFamilyAccount.details, "\n----------------当前收支明细------------------\n收支\t收支金额\t账户金额\t说明");//调用mainMenu显示菜单mainMenu(&myFamilyAccount);getchar();return 0;
}

运行结果展示

初级版本代码(未进行封装)

#define _CRT_SECURE_NO_WARNINGS
#include
#include
#include
int main() {char key;//表示用户输入的菜单int loop &＃61; 1;//控制是否退出菜单//登记收入情况,很重要的一点,&＃61;""是为了一开始输入1时不出现乱码char details[3000]&＃61;"\n----------------当前收支明细------------------\n收支\t收支金额\t账户金额\t说明";char note[20];//收支说明double money;//收入double balance &＃61; 1000.0;//初始化余额char temp[100];//用于格式化收支,并拼接char choice;//表示用户选择的y/nint flag &＃61; 0;//表示是否至少有一笔收支//显示菜单do {printf("\n\n----------------家庭收支记账软件-------------");printf("\n 1.收支明细");printf("\n 2.登记收入");printf("\n 3.登记支出");printf("\n 4.退出");printf("\n 请选择(1-4): ");scanf("%c", &key);getchar();//吸收回车switch (key){case &＃39;1&＃39;:if (flag) {printf("%s", details);}else {printf("\n当前没有任何收支明细,来一笔吧!");}break;case &＃39;2&＃39;:printf("本次收入金额:");scanf("%lf", &money);getchar();//吸收回车balance &＃43;&＃61; money;printf("\n本次收入说明:");scanf("%s", note);//不需要&getchar();//吸收回车sprintf(temp, "\n收入\t%.2f\t\t%.2f\t\t%s", money, balance, note);//拼接到detailsstrcat(details, temp);flag &＃61; 1;break;case &＃39;3&＃39;:printf("本次支出金额:");scanf("%lf", &money);getchar();if (money > balance) {printf("\n余额不足!");break;}printf("\n本次支出说明:");scanf("%s", note);//不需要&getchar();//吸收回车balance -&＃61; money;sprintf(temp, "\n支出\t%.2f\t\t%.2f\t\t%s", money, balance, note);strcat(details, temp);flag &＃61; 1;break;case &＃39;4&＃39;:printf("\n你是否确定退出? y/n\n:");do {scanf("%c", &choice);getchar();if (choice &＃61;&＃61; &＃39;y&＃39; || choice &＃61;&＃61; &＃39;n&＃39;) {break;}printf("\n输入有误,请重新输入y/n\n:");} while (1);if (choice &＃61;&＃61; &＃39;y&＃39;) {loop &＃61; 0;}}} while (loop);printf("你退出了软件!");return 0;
}//补充学习知识点:
//1.sprintf
//2.字符串的拼接
//3.字符串的输入&
//4.memset