#include<stdio.h>
#include<stdlib.h>
#include<string.h>
void choice();
void read();
void add();
void browse();
void refer();
void amend();
void result();
struct cost
{
char num[20];//编号
char type[20];//类型
char name[20];//经办人姓名
char reason[200];//原因
double amount;//收入金额
char remarks[200];//备注
double balances;//余额
}all[100];
int a;
double b;
int main()
{
char b;
do
{
choice();
printf("是否要继续使用?(yes/no)\n");
scanf("%c", &b);
} while (b!='n');
printf("\n");
printf("谢谢使用\n");
return 0;
}
void choice()
{
char b;
printf("********************************************\n");
printf(" 班费收支管理系统\n");
printf("请选择您所需要的服务,输入对应的序号:\n");
printf(" 1.添加班费收支信息\n");
printf(" 2.浏览所有班费收支信息\n");
printf(" 3.查询班费收支信息\n");
printf(" 4.修改班费收支信息\n");
printf(" 5.直接查询余额信息\n");
printf("********************************************\n");
scanf("%c", &b);
while (b !='1'&&b != '2'&&b != '3'&&b != '4')
{
printf("请重新输入有效数字\n");
scanf("%c", &b);
}
switch (b)
{
case '1': add(); break;
case '2': browse(); break;
case '3': refer(); break;
case '4': amend(); break;
case '5': result(); break;
}
}
void read()
{
FILE * fp, *NOM;
if ((fp=fopen("Class_expense_information","rb")) ==NULL)
{
a = 0;
fp = fopen("Class_expense_information", "wb");
fwrite(&a, sizeof(int), 1, fp);
fclose(fp);
}
}
void add()
{
FILE * fp, *NOM;
printf("请输入收支编号:\n");
scanf("%s", all[a].num);
printf("请输入经办人姓名:\n");
scanf("%s", all[a].name);
printf("请输入原因:\n");
scanf("%s", all[a].reason);
printf("请输入收支类型(in/out):\n");
scanf("%s", all[a].type);
printf("请输入金额:\n");
scanf("%lf", all[a].amount);
printf("请输入备注:\n");
scanf("%s", all[a].remarks);
switch (a)
{
case 0: fp = fopen("data", "wb"); break;
default: fp = fopen("data", "ab"); break;
}
fwrite(&all[a], sizeof(struct cost), 1, fp);
fclose(fp);
a++;
NOM = fopen("Class_expense_information", "wb");
fwrite(&a, sizeof(int), 1, NOM);
fclose(NOM);
}
void browse()
{
FILE *fp = NULL;
int c;
int sign = 1;
double sum;
fp = fopen("data", "rb");
for (c = 0; c < a; c++)
{
fread(&all[c], sizeof(struct cost), 1, fp);
printf("收支编号:%s\n", &all[c].num);
printf("收支类型:%s\n", &all[c].type);
printf("经办人姓名:%s\n", &all[c].name);
printf("原因:%s\n", &all[c].reason);
printf("金额:%lf\n", &all[c].amount);
printf("备注:%s\n", &all[c].remarks);
if (strcmp(all[c].type, "in") == 0) sign = 1;
else if (strcmp(all[c].type, "out") == 0) sign = -1;
sum = sum + (all[c].amount *sign);
all[c].balances = sum;
printf("余额:%lf\n", &all[c].balances);
}
}
void amend() // 按不同字段查询班费信息
{
FILE *fp = NULL;
int x, i, k, result[100];
char key_world[20];
begin3:
k = 0;
printf("\n");
printf("1.按班费收支编号查询\n");
printf("2.按班费收支类型查询\n");
printf("3.按班费经办人姓名查询\n");
printf("4.按班费收支原因查询\n");
printf("5.返回上一级\n");
printf("请输入你的选择:");
begin2:
scanf("%d", &x);
printf("请输入要查询的关键字:");
scanf("%s", key_world);
fp = fopen("data", "rb");
switch (x)
{
case 1:
for (i = 0; i < a; i++)
{
fread(&all[i], sizeof(struct cost), 1, fp);
if (strcmp(all[i].num, key_world) == 0)
{
result[k] = i;
k++;
}
}
break;
case 2:
for (i = 0; i < a; i++)
{
fread(&all[i], sizeof(struct cost), 1, fp);
if (strcmp(all[i].type, key_world) == 0)
{
result[k] = i;
k++;
}
}
break;
case 3:
for (i = 0; i < a; i++)
{
fread(&all[i], sizeof(struct cost), 1, fp);
if (strcmp(all[i].name, key_world) == 0)
{
result[k] = i;
k++;
}
}
break;
case 4:
for (i = 0; i < a; i++)
{
fread(&all[i], sizeof(struct cost), 1, fp);
if (strcmp(all[i].reason, key_world) == 0)
{
result[k] = i;
k++;
}
}
break;
case 5:
return;
break;
default:
printf("输入错误!请重新输入:");
fflush(stdin);
fclose(fp);
goto begin2;
break;
}
if (k == 0)
{
printf("没有查到相关的内容!\n");
fclose(fp);
goto begin3;
}
else
{
printf("\n\n查找到%d条记录:\n\n", k);
for (i = 0; i < k; i++)
{
fread(&all[result[i]], sizeof(struct cost), 1, fp);
printf("收支编号:%s\n", &all[result[i]].num);
printf("收支类型:%s\n", &all[result[i]].type);
printf("经办人姓名:%s\n", &all[result[i]].name);
printf("原因:%s\n", &all[result[i]].reason);
printf("金额:%lf\n", &all[result[i]].amount);
printf("备注:%s\n", &all[result[i]].remarks);
printf("当时余额:%lf\n", &all[result[i]].balances);
}
fclose(fp);
}
}
void refer() // 修改班费信息
{
FILE * fp = NULL;
int i, k, x, result[100];
char key_world[20];
printf("请输入你要修改的班费信息的编号:");
scanf("%s", key_world);
k = 0;
fp = fopen("data", "rb");
for (i = 0; i < a; i++)
{
fread(&all[i], sizeof(struct cost), 1, fp);
if (strcmp(all[i].num, key_world) == 0)
{
result[k] = i;
k++;
}
}
fclose(fp);
if (k == 0)
{
printf("没有查到相关的内容!\n");
return;
}
else
{
printf("\n\n查找到%d条记录:\n\n", k);
fp = fopen("data", "rb");
for (i = 0; i < k; i++)
{
printf("记录%d:\n", i + 1);
printf("收支编号:%s\n", &all[result[i]].num);
printf("收支类型:%s\n", &all[result[i]].type);
printf("经办人姓名:%s\n", &all[result[i]].name);
printf("原因:%s\n", &all[result[i]].reason);
printf("金额:%lf\n", &all[result[i]].amount);
printf("备注:%s\n", &all[result[i]].remarks);
printf("当时余额:%lf\n", &all[result[i]].balances);
}
close(fp);
begin4:
printf("请输入需要修改的记录的记录序号:");
scanf("%d", &x);
if (x > k)
{
printf("输入错误!");
fflush(stdin);
goto begin4;
}
else
{
printf("请输入班费编号:");
scanf("%s", all[result[x - 1]].num);
printf("请输入收支类型:");
scanf("%s", all[result[x - 1]].type);
printf("请输入经办人姓名:");
scanf("%s", all[result[x - 1]].name);
printf("请输入原因:");
scanf("%s", all[result[x - 1]].reason);
printf("请输入金额:");
scanf("%lf", all[result[x - 1]].amount);
printf("请输入备注:");
scanf("%s", all[result[x - 1]].remarks);
fp = fopen("data", "rb+");
for (i = 0; i < a; i++)
{
if (i != result[x])
{
fwrite(&all[i], sizeof(struct cost), 1, fp);
}
else
{
fwrite(&all[result[x]], sizeof(struct cost), 1, fp);
}
}
fclose(fp);
}
}
}
void result()
{
FILE *fp = NULL;
int c;
int sign = 1;
double sum;
fp = fopen("data", "rb");
for (c = 0; c < a; c++)
{
fread(&all[c], sizeof(struct cost), 1, fp);
if (strcmp(all[c].type, "in") == 0) sign = 1;
else if (strcmp(all[c].type, "out") == 0) sign = -1;
sum = sum + (all[c].amount *sign);
all[c].balances = sum;
printf("余额:%lf\n", &all[c].balances);
}
}
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编译没有报错但是运行出错,求解决
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5条回答 默认 最新
- SecretGarden 2018-04-04 15:20关注
所有的scanf函数中的变量,应该传入变量的地址,例如:
将:printf("请输入金额:\n"); scanf("%f", all[a].amount);
改为:
printf("请输入金额:\n"); scanf("%f", &all[a].amount);
另外,建议修改代码,消除所有的编译警告。你的问题也是因为你忽略警告造成的。
本回答被题主选为最佳回答 , 对您是否有帮助呢?解决 无用评论 打赏 举报