gets function in c | fgets function in c | gets in c programming

In this article gets function in c we give the information about file handling function in C such as fgets c, fprintf, fscanf in c and fputs in c, gets in c, fgets function in c, gets in c programming.

fputc() – File Handling

Data is written to the file with the fputc() function.

Syntax for fputc()

fputc(character, file_pointer);

• Character: The character which is to be written in the file, that character comes here.
• file_pointer: The pointer of the file to which the file is to be written.

// Using fputc()function program in File handling. 

#include <stdio.h>

int main()

{

char ch;

FILE *ptr;

ptr=fopen(“C:\\Demo1.txt”,”w”);

if(ptr==NULL)

{

printf(“File is not opened or created”);

}

else

{

printf(“Enter Single Character : “);

scanf(“%c”,&ch);

fputc(ch,ptr);

fclose(ptr);

}

return 0;

}

OUTPUT:-

Enter Single Character: S

fputs() function Syntax:

fputs(string_value, file_pointer);

#include <stdio.h>

int main()

{

char name[20];

FILE *ptr;

ptr=fopen(“C:\\Demo2.txt”,”w”);

if(ptr==NULL)

{

printf(“File is not opened or created”);

}

else

{

printf(“Enter Your Name : “);

scanf(“%s”,name);

fputs(name,ptr);

fclose(ptr);

}

return 0;

}

Output:

Enter Your Name: Yashraj

fgetc() – File Handling

The data in the file is read with the fgetc() function.

Syntax for fgetc()

fgetc(file_pointer);

• file_pointer: The pointer of the file to which the file is to be read.
• It normally returns only a single character from the file. but due to feof (end of file), it keeps on printing one-by-one characters until the characters in the file are exhausted.

#include <stdio.h>

int main()

{

char ch;

FILE *ptr;

ptr=fopen(“C:\\Demo2.txt”,”r”);

if(ptr==NULL)

{

printf(“File is not opened”);

}

else

{

while(!feof(ptr))

{

ch=getc(ptr);

printf(“%c”,ch);

}

fclose(ptr);

}

return 0;

}

Output:

11 Amol 19.700000

12 Raj 18.900000

13 Geeta 19.300000

#include <stdio.h>

int main()

{

char ch;

FILE *ptr;

ptr=fopen(“Demo.txt”,”r”);

if(ptr==NULL)

{

printf(“File is not opened”);

}

else

{

while((ch=fgetc(ptr))!=EOF)

{

printf(“%c”,ch);

}

fclose(ptr);

}

return 0;

}

Output:

11 Amol 9.700000

12 Raj 8.900000

13 Geeta 9.300000

fprintf() – File Handling

Data is written to the file with the fprintf() function.

Syntax for fprintf()

fprintf(file_pointer, “format_specifier or string”, variables);

• file_pointer: The pointer of the file to which the file is to be written.
• format specifier or string: as used in printf, similarly format specifier and string are used here. Both can also be used together.
• Variables : If the format specifier is given, it is a variable. If there were no format specifiers, there would be no variables.

#include <stdio.h>

int main()

{

char name[20];

int roll;

float cgpa;

FILE *ptr;

ptr=fopen(“C:\\Demo3.txt”,”w”);

if(ptr==NULL)

{

printf(“File is not opened or created”);

}

else

{

printf(“Enter Student Roll No. : “);

scanf(“%d”,&roll);

printf(“Enter Student Name : “);

scanf(“%s”,name);

printf(“Enter Student CGPA : “);

scanf(“%f”,&cgpa);

fprintf(ptr,”Roll : %d, Name : %s, CGPA : %f”,roll,name,cgpa);

fclose(ptr);

}     return 0;

}

Output:

1.Enter Student Roll No. : 12

2.Enter Student Name : Raj

3.Enter Student CGPA : 8.9

fscanf() – File Handling

This function is used to read the data in the file.

Syntax for fscanf()

fscanf(file_pointer, “format_specifier or string”, &variables);

• file_pointer: The pointer of the file to which the file is to be read.
• format specifier or string: as used in scanf, similarly format specifier and string are used here. Both can also be used together.
• Variables : If the format specifier is given, it is a variable. If there were no format specifiers, there would be no variables.

#include <stdio.h>

int main()

{

char name[20];

int roll,i,n;

float cgpa;

FILE *ptr;

ptr=fopen(“C:\\Demo3.txt”,”r”);

if(ptr==NULL)

{

printf(“File is not opened”);

}

else

{

while(!feof(ptr))

{

fscanf(ptr,”%d%s%f”,&roll,name,&cgpa);

printf(“Roll : %d, Name : %s, CGPA : %f\n”,roll,name,cgpa);

}

fclose(ptr);

}

return 0;

}

 Output:

1.Roll : 11, Name : Amol, CGPA : 8.900000

2.Roll : 12, Name : Raj, CGPA : 9.400000

3.Roll : 13, Name : Geeta, CGPA : 8.500000

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