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What is File C read a file C write a file C File Handling C Error Handling C Low Level Disk I/O C Other file functionsMemory Allocation
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C File Write
The following functions are used to write data into a file.
- fprintf()
- fputc()
- fputs()
Files - fprintf()
The fprintf() function is used to write sequence of characters, integers, floats, etc. by using appropriate format specifier specified data type.
C program - fprintf()
Lets try to code using fprintf() and have some fun.
#include <stdio.h>
int main()
{
FILE *fptr; //File pointer declaration
char name[40];
int age;
fptr = fopen("record.txt", "w "); //the function fopen opens the record text file
printf("\nEnter your name : ");
scanf("%s", name);
printf("\nEnter your age : ");
scanf("%d",&age);
fprintf(fptr,"%s", name); //the entered name is written in to the file
fprintf(fptr,"%d ", age); //the entered age is written to the file
fclose(fptr); //the function closes the opened file
return 0;
}
- Enter your name : siva
- Enter your age : 21
Note:
The program shows that the fprintf function is used to store the name and age into the file record.txt.
Files - fputc()
The fputc() function also used to write into an opened file. But it writes a single character at a time.
C program - fputc()
Lets try to code using fputc() and have some fun.
#include <stdio.h>
int main()
{
FILE *fptr; //File pointer declaration
char ch;
fptr = fopen("record.txt", "a "); //the function fopen opens the record text file
printf("\nEnter characters with a space to write into a file press 'y 'to stop writing : ");
scanf("%c",&ch);
while(ch != 'y')
{
fputc(ch, fptr);
scanf("%c",&ch);
}
fclose(fptr); //the function closes the opened file
return 0;
}
- Enter characters with a space to write into a file press 'y 'to stop writing : f u n y
Note:
The program shows that the fputc function is used to store entered character through variable ch into the file record.txt.
Files - fputs()
The fputs() function used to write sequence of characters into file without the opened file. The fputs() function is used write a string into a file.
C program - fputs()
Lets try to code using fputs() and have some fun.
#include <stdio.h>
int main()
{
FILE *fptr; //File pointer declaration
char name[40], city[40];
fptr = fopen("record.txt", "w "); //the function fopen opens the record text file
printf("\nEnter your name : ");
scanf("%s", name);
printf("\nEnter your city : ");
scanf("%s", city);
fputs(name, fptr); //the entered name is written in to the file
fputs(city, fptr); //the entered age is written to the file
fclose(fptr); //the function closes the opened file
return 0;
}
- Enter your name : Sundar
- Enter your city : Delhi
Note:
The program shows that the fputs function is used to store the name and age into the file record.txt.
Related to File Write
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