Thread: insert_After_Target In File

  1. 12-14-2003 #1
    swishiat.com
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    insert_After_Target In File

    hello,
    I have problem with this program i wanaa insert new data after target (id from user) the compiler did not give any mistakes ???
    this is the function insert_After_Target
    Code:
     
/*********** Insert After Target ***********/
void insert_After_Target(FILE *f1,int t){
	FILE *f2;
	data R;
	data Z;
	f1=fopen("f1.dat","r");
	f2=fopen("f2.dat","w");
	while(!feof(f1)){
		fscanf(f1,"%d %f ",&R.id,&R.gpa);
		fprintf(f2,"%d %f ",R.id,R.gpa);
		if(R.id==t){
			read(&Z);
			fprintf(f2,"%d %f ",Z.id,Z.gpa);
		}
	}
	fclose(f1);
	fclose(f2);
	f1=fopen("f1.dat","w");
	f2=fopen("f2.dat","r");
	while(!feof(f2)){
		fscanf(f2,"%d %f ",&R.id,&R.gpa);
		fprintf(f1,"%d %f ",R.id,R.gpa);
	}
	fclose(f1);
	fclose(f2);
}
    --------------
    this is the program
    Code:
    #include<stdio.h>
/*********** Data ***********/
typedef struct {
	int id;
	float gpa;
}data;
/*********** The functions ***********/
void read(data*);
void print(FILE*);
void insert_last(FILE*);
void insert_After_Target(FILE*,int);
int search(FILE*,int);
int size(FILE*);
void menu();
/*********** Main ***********/
int main(){
	data R;
	int s;
	FILE *f;
	int choice;
	int i,t,n;
	if((f=fopen("f.dat","w"))==NULL)
		printf("sorry i can not open the file\n");
	else{
	for(i=0;i<3;i++){
		read(&R);
		fprintf(f,"%d %.2f ",R.id,R.gpa);
	}
	fclose(f);
	menu();
	scanf("%d",&choice);
	while(choice!=5){
		switch(choice){
		case 1:
			s=size(f);
			printf("The Size is : %d\n",s);
			menu();
			break;
		case 2:
			insert_last(f);
			menu();
			break;
		case 3:
			printf("Enter the Taget: ");
			scanf("%d",&t);
			n=search(f,t);
			printf("n=%d\n",n);
			if(n==1)
			insert_After_Target(f,t);
			else
				printf("Target not found\n");
			menu();
			break;
		case 4:
			print(f);
			menu();
			break;
		default :
			printf("Error choice try agan\n");
		 menu();
			break;
		}
		scanf("%d",&choice);
	} 

	}
	return 0;
}

/*********** Menu ***********/
void menu(){
	printf("+------------------------------------------------------+");
	printf("\n|                | The Main Menu |                     |");
	printf("\n+------------------------------------------------------+");
	printf("\n| 1- Size of File.                                     |");
	printf("\n| 2- Inserts a new data in the last.                   |");
	printf("\n| 3-Inserts After Target.                              |");
	printf("\n| 4- Print The File.                                   |");	
	printf("\n| 5- End.                                              |");	
	printf("\n+------------------------------------------------------+");
	printf("\nEnter your choice :");
}
/*********** Read ***********/
void read(data *R){
	printf("Enter the id :");
	scanf("%d",&R->id);
	printf("\n");
	printf("Enter the gpa :");
	scanf("%f",&R->gpa);
	printf("\n");
}
/*********** Print ***********/
void print(FILE *f){
	data R;
		if((f=fopen("f.dat","r"))==NULL)
		printf("sorry i can not open the file\n");
	else{
		fscanf(f,"%d %f",&R.id,&R.gpa);
	while(!feof(f)){		
		printf("The id is: %d the gpa is: %.2f\n",R.id,R.gpa);
		fscanf(f,"%d %f",&R.id,&R.gpa);
	}
	fclose(f);
}
}
/*********** Insert Last ***********/
void insert_last(FILE *f){
	data R;
	if((f=fopen("f.dat","a"))==NULL)
		printf("Sorry can not open the file\n");
	else{
		read(&R);
		fprintf(f,"%d %f ",R.id,R.gpa);
		fclose(f);
	}
}
/*********** Insert After Target ***********/
void insert_After_Target(FILE *f1,int t){
	FILE *f2;
	data R;
	data Z;
	f1=fopen("f1.dat","r");
	f2=fopen("f2.dat","w");
	while(!feof(f1)){
		fscanf(f1,"%d %f ",&R.id,&R.gpa);
		fprintf(f2,"%d %f ",R.id,R.gpa);
		if(R.id==t){
			read(&Z);
			fprintf(f2,"%d %f ",Z.id,Z.gpa);
		}
	}
	fclose(f1);
	fclose(f2);
	f1=fopen("f1.dat","w");
	f2=fopen("f2.dat","r");
	while(!feof(f2)){
		fscanf(f2,"%d %f ",&R.id,&R.gpa);
		fprintf(f1,"%d %f ",R.id,R.gpa);
	}
	fclose(f1);
	fclose(f2);
}
/*********** Search ***********/
int search(FILE *f,int t){
	data R;
	int m=0;
	f=fopen("f.dat","r");

	while(!feof(f)){
			fscanf(f,"%d %f ",&R.id,&R.gpa);
		if(R.id==t){
			 m=1;
			 fclose(f);
			 return m;
		}

	}
	fclose(f);
	return m=0;

}
/*********** Size ***********/
int size(FILE*f){
	int c=0;
	data R;
	f=fopen("f.dat","r");
	while(!feof(f)){
		fscanf(f,"%d %f ",&R.id,&R.gpa);
		c++;
	}
	fclose(f);
	return c;
}
/*********** End ***********/
  2. 12-14-2003 #2
    swoopy
    swoopy is offline
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    Oct 2001
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    Code:
    >/*********** Insert After Target ***********/
>void insert_After_Target(FILE *f1,int t){
>	FILE *f2;
>	data R;
>	data Z;
>	f1=fopen("f1.dat","r");

/* Your original file was named f.dat, yet here you are opening f1.dat.  Change this to f.dat. */

>	f2=fopen("f2.dat","w");
>	while(!feof(f1)){
>		fscanf(f1,"%d %f ",&R.id,&R.gpa);
>		fprintf(f2,"%d %f ",R.id,R.gpa);
>		if(R.id==t){
>			read(&Z);
>			fprintf(f2,"%d %f ",Z.id,Z.gpa);
>		}
>	}
>	fclose(f1);
>	fclose(f2);
>	f1=fopen("f1.dat","w");

/* Same problem here. */
    Last edited by swoopy; 12-14-2003 at 10:09 PM.
    http://www.freechess.org
  3. 12-15-2003 #3
    swishiat.com
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    yeeeeeees now the program run
    thank u very match
  4. 12-15-2003 #4
    swishiat.com
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    new error
    this error from compiler when i add the function Insert_first
    --------------------Configuration: Cpp1 - Win32 Debug--------------------
    Compiling...
    Cpp1.cpp
    Linking...
    Cpp1.obj : error LNK2001: unresolved external symbol "void __cdecl insert_first(struct _iobuf *)" (?insert_first@@YAXPAU_iobuf@@@Z)
    Debug/Cpp1.exe : fatal error LNK1120: 1 unresolved externals
    Error executing link.exe.

    Cpp1.exe - 2 error(s), 0 warning(s)
    the function
    Code:
    /*********** Insert First ***********/
void insert_fist(FILE *f){
	FILE *f2;
	data R;
	f=fopen("f.dat","r");
	f2=fopen("f2.dat","w");
	read(&R);
	fprintf(f2,"%d %f ",R.id,R.gpa);
	while(!feof(f)){
		fscanf(f,"%d %f ",&R.id,&R.gpa);
		fprintf(f2,"%d %f ",R.id,R.gpa);
	}
	fclose(f);
	fclose(f2);
	f=fopen("f.dat","w");
	f2=fopen("f2.dat","r");
	while(!feof(f2)){
		fscanf(f2,"%d %f ",&R.id,&R.gpa);
		fprintf(f,"%d %f ",R.id,R.gpa);		
	}
	fclose(f);
	fclose(f2);
}
    ------
    the all program after chang
    Code:
    #include<stdio.h>
/*********** Data ***********/
typedef struct {
	int id;
	float gpa;
}data;
/*********** The functions ***********/
void read(data*);
void print(FILE*);
void insert_last(FILE*);
void insert_first(FILE*);
void insert_After_Target(FILE*,int);
void delet_first(FILE*);
int search(FILE*,int);
int size(FILE*);
void copy(FILE*,FILE*);
void menu();
/*********** Main ***********/
int main(){
	data R;
	FILE *f;
	int choice;
	int i,t,n;
	if((f=fopen("f.dat","w"))==NULL)
		printf("sorry i can not open the file\n");
	else{
	for(i=0;i<3;i++){
		read(&R);
		fprintf(f,"%d %.2f ",R.id,R.gpa);
	}
	fclose(f);
	menu();
	scanf("%d",&choice);
	while(choice!=6){
		switch(choice){
		case 1:
			insert_first(f);
			menu();
			break;
		case 2:
			insert_last(f);
			menu();
			break;
		case 3:
			printf("Enter the Taget: ");
			scanf("%d",&t);
			n=search(f,t);
			printf("n=%d\n",n);
			if(n==1)
			insert_After_Target(f,t);
			else
				printf("Target not found\n");
			menu();
			break;
		case 4:
			print(f);
			menu();
			break;
		case 5:
			delet_first(f);
			menu();
		default :
			printf("Error choice try agan\n");
		 menu();
			break;
		}
		scanf("%d",&choice);
	} 

	}
	return 0;
}

/*********** Menu ***********/
void menu(){
	printf("+------------------------------------------------------+");
	printf("\n|                | The Main Menu |                     |");
	printf("\n+------------------------------------------------------+");
	printf("\n| 2- Inserts a new data in the first.                  |");
	printf("\n| 2- Inserts a new data in the last.                   |");
	printf("\n| 3- Inserts After Target.                             |");
	printf("\n| 4- Print The File.                                   |");	
	printf("\n| 5- Delet First.                                      |");
	printf("\n| 6- End.                                              |");	
	printf("\n+------------------------------------------------------+");
	printf("\nEnter your choice :");
}
/*********** Read ***********/
void read(data *R){
	printf("Enter the id :");
	scanf("%d",&R->id);
	printf("\n");
	printf("Enter the gpa :");
	scanf("%f",&R->gpa);
	printf("\n");
}
/*********** Print ***********/
void print(FILE *f){
	data R;
		if((f=fopen("f.dat","r"))==NULL)
		printf("sorry i can not open the file\n");
	else{
		fscanf(f,"%d %f",&R.id,&R.gpa);
	while(!feof(f)){		
		printf("The id is: %d the gpa is: %.2f\n",R.id,R.gpa);
		fscanf(f,"%d %f",&R.id,&R.gpa);
	}
	fclose(f);
}
}
/*********** Insert Last ***********/
void insert_last(FILE *f){
	data R;
	if((f=fopen("f.dat","a"))==NULL)
		printf("Sorry can not open the file\n");
	else{
		read(&R);
		fprintf(f,"%d %f ",R.id,R.gpa);
		fclose(f);
	}
}
/*********** Insert After Target ***********/
void insert_After_Target(FILE *f,int t){
	FILE *f2;
	data R;
	data Z;
	f=fopen("f.dat","r");
	f2=fopen("f2.dat","w");
	while(!feof(f)){
		fscanf(f,"%d %f ",&R.id,&R.gpa);
		fprintf(f2,"%d %f ",R.id,R.gpa);
		if(R.id==t){
			read(&Z);
			fprintf(f2,"%d %f ",Z.id,Z.gpa);
		}
	}
	fclose(f);
	fclose(f2);
	f=fopen("f.dat","w");
	f2=fopen("f2.dat","r");
	while(!feof(f2)){
		fscanf(f2,"%d %f ",&R.id,&R.gpa);
		fprintf(f,"%d %f ",R.id,R.gpa);
	}
	fclose(f);
	fclose(f2);
}
/*********** Search ***********/
int search(FILE *f,int t){
	data R;
	int m=0;
	f=fopen("f.dat","r");

	while(!feof(f)){
			fscanf(f,"%d %f ",&R.id,&R.gpa);
		if(R.id==t){
			 m=1;
			 fclose(f);
			 return m;
		}

	}
	fclose(f);
	return m=0;

}
/*********** Size ***********/
int size(FILE*f){
	int c=0;
	data R;
	f=fopen("f.dat","r");
	while(!feof(f)){
		fscanf(f,"%d %f ",&R.id,&R.gpa);
		c++;
	}
	fclose(f);
	return c;
}
/*********** Delet First ***********/
void delet_first(FILE *f){
	FILE *f2;
	data R;
	f=fopen("f.dat","r");
	f2=fopen("f2.dat","w");
	fscanf(f,"%d %f ",&R.id,&R.gpa);
	while(!feof(f)){
		fscanf(f,"%d %f ",&R.id,&R.gpa);
		fprintf(f2,"%d %f ",R.id,R.gpa);
	}
	fclose(f);
	fclose(f2);
	f=fopen("f.dat","w");
	f2=fopen("f2.dat","r");
	while(!feof(f2)){
		fscanf(f2,"%d %f ",&R.id,&R.gpa);
		fprintf(f,"%d %f ",R.id,R.gpa);
	}
	fclose(f);
	fclose(f2);
}
/*********** Copy ***********/
void copy(FILE *f,FILE *f2){
	data R;
	while(!feof(f2)){
		fscanf(f2,"%d %f ",&R.id,&R.gpa);
		fprintf(f,"%d %f ",R.id,R.gpa);
	}
}
/*********** Insert First ***********/
void insert_fist(FILE *f){
	FILE *f2;
	data R;
	f=fopen("f.dat","r");
	f2=fopen("f2.dat","w");
	read(&R);
	fprintf(f2,"%d %f ",R.id,R.gpa);
	while(!feof(f)){
		fscanf(f,"%d %f ",&R.id,&R.gpa);
		fprintf(f2,"%d %f ",R.id,R.gpa);
	}
	fclose(f);
	fclose(f2);
	f=fopen("f.dat","w");
	f2=fopen("f2.dat","r");
	while(!feof(f2)){
		fscanf(f2,"%d %f ",&R.id,&R.gpa);
		fprintf(f,"%d %f ",R.id,R.gpa);		
	}
	fclose(f);
	fclose(f2);
}
/*********** End ***********/
  5. 12-15-2003 #5
    anonytmouse
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    insert_fist != insert_first

    This error means that the function listed can not be found.
  6. 12-15-2003 #6
    swishiat.com
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    thanks very very match evrything good now
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