尚硅谷C语言零基础快速入门教程
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//1.解决一个问题，目前没有数据库，应该使用数结构体赖保存数据，才能达到效果
//2.
typedef struct Income{
double money;
char* state;
char* king;
double sum;
struct Income *next;
}Income;
Income* init(){ //初始化
Income* income = (Income*)malloc(sizeof(Income));
income -> money = 0.0;
income -> state = "";
income -> king = "";
income -> sum = 0.0;
income -> next = NULL;
return income;
}
void Income_init(Income* income,double data,char string[]){ //收入
//创建一个登录收入结构体需要多大的空间
double k = 0.0;
Income* node = (Income*)malloc(sizeof(Income));
node -> money = data; //赋值
node -> state = string; //赋值(地址)
node -> king = "收入";
k = income -> sum;
k += data;
node -> sum = k;
income -> sum = k;
node -> next = income -> next;
income -> next = node;
}
void expend_init(Income* income,double data,char string[]){ //支出
//创建一个登录收入结构体需要多大的空间
double k = 0.0;
Income* node = (Income*)malloc(sizeof(Income));
node -> money = data; //赋值
node -> state = string; //赋值
node -> king = "支出";
k = income -> sum;
k -= data;
node -> sum = k;
income -> sum = k;
node -> next = income -> next;
income -> next = node;
}
void forprint(Income* income){//明细
income = income -> next;
printf("————————当前收支明细记录————————\n");
printf("收支\t\t收支金额\t说明\t账号金额\n");
while(income){
printf("%s\t\t%.2f\t\t%s\t\t%.2f\n",income -> king,income -> money,income -> state,income -> sum);
income = income -> next;
}
printf("\n");
}
void main(){
int tmp = 0;
double kl = 0; //金额
char name[30];
char turn = ' ';
Income* income = init();
while(1){
printf("————————家庭收支记账软件————————\n");
printf("\t\t1 收到明细\n");
printf("\t\t2 登录收入\n");
printf("\t\t3 登录支出\n");
printf("\t\t4 退 出\n");
printf("请选择(1-4):");
scanf("%d",&tmp);
if(tmp == 2){//添加金额
printf("本次收入金额:");
scanf("%lf",&kl);
printf("本次收入说明:");
scanf("%s",name);
Income_init(income,kl,name);
}else if(tmp == 1){ //显示明细
forprint(income);
}else if(tmp == 4){ //退出
getchar();
printf("\n确认是否退出(Y/N):");
scanf("%c",&turn);
if(turn == 'Y' || turn == 'y'){
break;
}else if(turn == 'N' || turn == 'n'){
continue;
}else{
printf("请输入有效值！！！\n");
}
}else if(tmp == 3){//支出
printf("本次支出金额:");
scanf("%lf",&kl);
printf("本次支出说明:");
scanf("%s",name);
expend_init(income,kl,name);
}
}
getchar();
getchar();
}
