程序，用于存储结构中员工的详细信息
这是一个存储结构中员工详细信息的程序。虽然程序运行它显示许多错误，但它没有给我输入地址的机会。为什么程序运行不正常。我哪里错了？
#include <stdio.h>
#include <conio.h>
struct details
{
char name[30];
int age;
char address[500];
float salary;
};
int main()
{
struct details detail;
clrscr();
printf("\nEnter name:\n");
gets(detail.name);
printf("\nEnter age:\n");
scanf("%d",&detail.age);
printf("\nEnter Address:\n");
gets(detail.address);
printf("\nEnter Salary:\n");
scanf("%f",&detail.salary);
printf("\n\n\n");
printf("Name of the Employee : %s \n",detail.name);
printf("Age of the Employee : %d \n",detail.age);
printf("Address of the Employee : %s \n",detail.address);
printf("Salary of the Employee : %f \n",detail.salary);
getch();
}
这是我得到的输出：
3 个答案:
答案 0 :(得分：2)
语句scanf("%d",&detail.age);将会显示222，但不会显示您输入的换行符。此换行符将保留在输入缓冲区中，并将其传递给下一个输入gets（）。
您可以使用getchar()方法从输入缓冲区中删除一些字符以避免此类问题。
char ch;
....
printf("\nEnter age:\n");
scanf("%d",&detail.age);
while((ch = getchar()) != '\n' && ch != EOF) { }
printf("\nEnter Address:\n");
gets(detail.address);
另一个问题是使用printf函数错误地使用format说明符。
答案 1 :(得分：0)
// To Developed Employee Details using LogIn Screen
// And access to add employee,view details by id, update data, delete
// using structure
#include <stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<string.h>
#include<dos.h>
#include<windows.h>
/*structure declaration*/
struct employee
{
char fname[20],lname[20];
int emp_id;
float emp_salary;
};
void main()
{
FILE *outfile, *infile,*temp;
struct employee input;
int a,op,o,n;
char pass[20],uname[30];
char ch;
int j,k,i;
char pass1[5]="amit", un[5]="amit",fnam[20],lnam[20];
//Design Part
printf("\n\n\t");
for(i=0;i<11;i++) {
printf("*");
usleep(50000);
}
usleep(500000); printf(" Welcome");usleep(500000);printf(" To ");usleep(500000);
printf("A"); usleep(500000); printf("X"); usleep(500000); printf("I"); usleep(500000); printf("O"); usleep(500000); printf("M");
usleep(500000); printf(" SOFTECH");usleep(500000);printf(" PVT.");usleep(500000);printf(" LTD. ");usleep(50000);
for(i=0;i<11;i++)
{
printf("*");
usleep(50000);
}
login:
printf("\n\n\t\t\t ~~~~~~~~~~~~~~~~~~~~~");
printf("\n\t\t\t | AUTHORIZE LOGIN |");
printf("\n\t\t\t ~~~~~~~~~~~~~~~~~~~~~");
printf("\n\n\t\t*-----------------------------------------*");
printf("\n\t\t User Name :- ");
gets(uname);
printf("\n\t\t Password(Provided By programmer) :- ");
for(i=0;i<4;i++)
{
ch = getch();
pass[i] = ch;
ch = '*' ;
printf("%c",ch);
}
printf("\n\t\t*-----------------------------------------*");
pass[i] = '\0';
getch();
if((strcmp(uname,un)==0) && (strcmp(pass,pass1)==0))
{
printf("\n\n\n\t\t @-------- Login Successful --------@"); //login successful then data will
menu:
printf("\n\n \t+++++++++++++++++ AMIT BEHERE PVT. LTD. +++++++++++++++++");
printf("\n\n\t\t #```````````````````````````#");
printf("\n\t\t | AB Employee Management |");
printf("\n\t\t #'''''''''''''''''''''''''''#");
printf("\n\t\t *---------------------------*");
printf("\t\n\t\t |\t1. Add Employee \t|\n\t\t |\t2. Display Employee\t|\n\t\t |\t3. Search Employee\t|\n\t\t |\t4. Update Employee\t|\n\t\t |\t5. Delete Employe\t|");
printf("\n\t\t *---------------------------*");
printf("\n\t Enter Option :- ");
scanf("%d",&op);
switch(op)
{
case 1: //Add Employee
outfile = fopen ("accounts.dat","a+");
if (outfile == NULL)
{
fprintf(stderr, "\n\tError opening accounts.dat\n\n");
}
printf("\n\tEnter Count Of Employee To Add :- ");
scanf("%d",&n);
for(i=0;i<n;i++)
{
printf("\n\t Enter First Name :- ");
scanf ("%s", input.fname);
printf("\n\t Enter Last Name :- ");
scanf ("%s", input.lname);
printf("\n\t Enter Employee Id :- ");
scanf ("%d", &input.emp_id);
printf("\n\t Enter Salary :- ");
scanf ("%f", &input.emp_salary);
// write entire structure to Accounts file
fwrite (&input, sizeof(struct employee), 1, outfile);
}
fclose(outfile);
break;
case 2: //Display All Records
infile = fopen ("accounts.dat","r");
if (infile == NULL)
{
fprintf(stderr, "\nError opening accounts.dat\n\n");
}
rewind(infile);
while (fread (&input, sizeof(struct employee), 1, infile)==1)
{
printf("\n\t#---------------------------------------#");
printf ("\n\t| Name Of Employee %d -> %5s %5s \t|\n\t| Employee Id -> %4d \t\t|\n\t| Salary -> %8.2f\t\t|\n",i,
input.fname, input.lname, input.emp_id, input.emp_salary);
printf("\t#---------------------------------------#");
printf("\n");
i++;
}
i=1;
fclose(infile);
break;
case 3: //Search Employee
infile = fopen ("accounts.dat","r");
if (infile == NULL)
{
fprintf(stderr, "\nError opening accounts.dat\n\n");
}
printf("\n\t Enter First name of Employee :-");
scanf("%s",&fnam);
printf("\n\t Enter Last name of Employee :-");
scanf("%s",&lnam);
rewind(infile);
while(fread(&input,sizeof(input),1,infile)==1)
{
if((strcmp(input.fname,fnam)==0)&&(strcmp(input.lname,lnam)==0))
{
printf("\n\t#-----------------------------------------------#");
printf ("\n\t| Name Of Employee -> %5s %5s \t\t|\n\t| Employee Id -> %4d \t\t\t|\n\t| Salary -> %8.2f\t\t\t|\n",
input.fname, input.lname, input.emp_id, input.emp_salary);
printf("\t#-----------------------------------------------#");
}
}
fclose(infile);
break;
case 4: //Employee Update
infile = fopen ("accounts.dat","rb+");
if (infile == NULL)
{
fprintf(stderr, "\nError opening accounts.dat\n\n");
}
printf("\n\tEnter the Employee Name to Modify: ");
scanf("%s",fnam);
printf("\n\tEnter Last Name of Employee :-");
scanf("%s",&lnam);
rewind(infile);
while(fread(&input,sizeof(input),1,infile)==1)/// fetch all record from file
{
if( (strcmp(input.fname,fnam)==0) && (strcmp(input.lname,lnam)==0)) ///if entered name matches with that in file
{
update:
printf("\n\t\t *````````````````````````````*");
printf("\n\t\t | Employee Details Parameter |");
printf("\n\t\t *''''''''''''''''''''''''''''*");
printf("\n\t\t +-------------------+");
printf("\t\n\t\t |\t1. First Name \t|\n\t\t |\t2. Last Name\t|\n\t\t |\t3. Employee Id\t|\n\t\t |\t4. Salary\t|\n\t\t ");
printf("+-------------------+");
printf("\n");
printf("\n\t Enter Field Option to Update :- ");
scanf("%d",&o);
switch(o)
{
case 1:
printf("\n\t Enter First Name :- ");
scanf ("%s", input.fname);
break;
case 2:
printf("\n\t Enter Last Name :- ");
scanf ("%s", input.lname);
break;
case 3:
printf("\n\t Enter Employee Id :- ");
scanf ("%d", &input.emp_id);
break;
case 4:
printf("\n\t Enter Salary :- ");
scanf ("%f", &input.emp_salary);
break;
}
printf("\n Do you Wish to Continue Updation for Given Employee[Y/N] ");
scanf("%s",&ch);
if(ch=='y'||ch=='Y')
{
goto update;
}
fseek(infile,-sizeof(struct employee),SEEK_CUR); /// move the cursor 1 step back from current position
fwrite(&input,sizeof(struct employee),1,infile); /// override the record
fclose(infile);
}
}
break;
case 5: //Delete Employee
outfile = fopen ("accounts.dat","rb+");
printf("\n\tEnter First Name of Employee :- ");
scanf("%s",fnam);
printf("\n\tEnter Last Name of Employee :-");
scanf("%s",&lnam);
temp = fopen("temp.dat","wb"); /// temporary file is created
rewind(outfile); /// move record to starting of file
while(fread(&input,sizeof(struct employee),1,outfile) == 1) /// read all records from file
{
if(strcmp(input.fname,fnam) != 0 &&(strcmp(input.lname,lnam)!=0) ) /// if the entered record match
{
fwrite(&input,sizeof(struct employee),1,temp); // move all records except the one that is to be deleted to temp file
}
}
fclose(outfile);
fclose(temp);
remove("accounts.dat"); // Delete orginal file
rename("temp.dat","accounts.dat"); // rename the temp file to original file name
outfile = fopen("accounts.dat", "rb+");
printf("\n\tRecord Deleted Successfully...\n");
break;
default: printf("\n\t\t Enter Valid Option");
goto menu;
}
printf("\n Do you Wish to Continue With Employee Management Service[Y/N] ");
scanf("%s",&ch);
if(ch=='y'||ch=='Y')
{
goto menu;
}
}
else
{
system("cls");
printf("\n\n \t++++++++++++ Welcome To AMIT BEHERE World. ++++++++++++");
printf("\n\n\t\tInvalid UserName or Password");
printf("\n\t\tTry Again");
goto login;
}
}
答案 2 :(得分：0)
#include <stdio.h>
#include <conio.h>
#include<string.h>
struct details
{
char name[30];
int age;
char address[500];
float salary;
};
int main()
{
struct details detail;
printf("\nEnter name:\n");
gets(detail.name);
printf("\nEnter age:\n");
scanf("%d",&detail.age);
printf("\nEnter Address:\n");
scanf("%s",&detail.address);
printf("\nEnter Salary:\n");
scanf("%f",&detail.salary);
printf("\n\n\n");
printf("Name of the Employee : %s \n",detail.name);
printf("Age of the Employee : %d \n",detail.age);
printf("Address of the Employee : %s \n",detail.address);
printf("Salary of the Employee : %f \n",detail.salary);
getch();
}
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