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| #include <stdio.h>
#include <string.h>
#include <conio.h>
#include <windows.h>
void main()
{
typedef struct
{ char charvar[30];
float floatvar;
int intvar;
} Info;
Info data;
int i,n,newint,c,siz,m,z;
int num;
char newch,newst[30],ch;
FILE *myfile;
FILE *myfile2;
menu:
clrscr();
printf("1 - Vvod\n");
printf("2 - Chtenie\n");
printf("3 - Dobavlenie\n");
printf("4 - Redaktirovanie\n");
printf("5 - Ydalenie\n");
ch=getch();
switch (ch) {
case 49: {
//====================ÓÓÐÐÐÀÀ!! Çàïèñü!============
myfile = fopen("D:/hardware.dat","wb");
printf("Vvod dannuh o tovarax:\n");
i=1;
do
{ printf("\n N/N: %d\n",i);
printf("\n Nazvanie --> ");
scanf("%s",&data.charvar);
printf("\n Stoumost' --> ");
scanf("%f",&data.floatvar);
printf("\n Kolichestvo --> ");
scanf("%d",&data.intvar);
fwrite(&data,sizeof(Info),1,myfile);
i++;
printf("\nProdolzhit vvod tovarov?? Esc - net , Enter - da ");
newch=getch();
printf("\n");
} while (newch!=27);
fclose(myfile);goto menu; } break;
//===================Äîáàâëåíèå ïîëó÷èëîñü ñ 1 ðàçà))======
case 51:{
myfile = fopen("D:/hardware.dat","ab");
printf("Dobavlenie:\n");
do
{printf("\n Nazvanie --> ");
gets(data.charvar);
printf("\n Stoumost' --> ");
scanf("%f",&data.floatvar);
printf("\n Kolichestvo --> ");
scanf("%d",&data.intvar);
fwrite(&data,sizeof(Info),1,myfile);
printf("\nProdolzhit vvod tovarov?? Esc - net , Enter - da ");
newch=getch();
printf("\n");
} while (newch!=27);
fclose(myfile);goto menu;
}break;
case 50:{
//======================×òåíèå 2 ============
printf("Vuvid dannuh o tovare:\n");
myfile=fopen("D:/hardware.dat","rb"); //
i=1;
fread(&data,sizeof(Info),1,myfile);
do
{
printf("N\N: %d | Nazvanie: %s Stoimost': %3.2f Kolichestvo: %d \n",i,data.charvar,data.floatvar,data.intvar);
fread(&data,sizeof(Info),1,myfile);
i++;
}
while (!feof(myfile));
fclose(myfile);
getch(); goto menu;}break;
//========================Ïîèñê==============================
case 52: {
printf("Edit:\n");
myfile=fopen("D:/hardware.dat","rb+"); // îòêðûòèå áèíàðíîãî ôàéëà äëÿ ÷òåíèÿ
printf("Nomer tovara -->");
scanf("%d",&siz);
i=1;
label1:
fread(&data,sizeof(Info),1,myfile);
if (siz==i)
{printf("\n N\N: %d \n\n",i); printf(" Nazvanie:"); puts(data.charvar);printf("\n");printf(" Stoimost': %3.2f\n\n Kolichestvo: %d \n\n",data.floatvar,data.intvar);
} else {
i++; goto label1; } ;
printf("name ->"); scanf("%s",&data.charvar);
printf("cena ->"); scanf("%f",&data.floatvar);
printf("kol->");scanf("%d",&data.intvar);
fseek(myfile,-sizeof(Info),i);
fwrite(&data,sizeof(Info),1,myfile);
break;}
case 53:
{
clrscr();
printf("Vuvod dannuh o tovare:\n");
myfile=fopen("D:/ware.dat","rb");
n=0;
printf("\nBEFORE FREAD OF FILE: N=%d",n);
fseek( myfile, 0, 2 );
n = ftell(myfile) / sizeof(Info);
printf("\nAFTER COUNTING OF FILE: N=%d",n);
rewind(myfile);
printf("\nNazvanue------>");
scanf("%s",&newst);
myfile2=fopen("D:/hardware1.dat","wb");
//i=1;
for(i=0;i<n-1;++i)
{ fread(&data,sizeof(Info),1,myfile);
if(strcmp(newst,data.charvar)!=0)
fwrite(&data,sizeof(Info),1,myfile2) ;
// i++;
}
//while(!feof(myfile));
fclose(myfile);
fclose(myfile2);
printf("\n--->>%d",i);
myfile2=fopen("D:/hardware1.dat","rb");
//i=1;
myfile=fopen("D:/hardware.dat","wb");
for(i=0;i<n-1;++i)
{
fread(&data,sizeof(Info),1,myfile2);
fwrite(&data,sizeof(Info),1,myfile) ;
}
//while (!feof(myfile2));
fclose(myfile);
fclose(myfile2);
//printf("\n--->>>%d",i);
getch();
goto menu; }break;
} } |
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