C Exercises: Create a file and input text

Last update on August 08 2025 12:52:47 (UTC/GMT +8 hours)

1. Create & Store File

Write a program in C to create and store information in a text file.

Sample Solution:

#include <stdio.h>
#include <stdlib.h>
  
int main()
{
   char str[1000];
   FILE *fptr;
   char fname[20]="test.txt";

    printf("\n\n Create a file (test.txt) and input text :\n");
	printf("----------------------------------------------\n"); 
   fptr=fopen(fname,"w");	
   if(fptr==NULL)
   {
      printf(" Error in opening file!");
      exit(1);
   }
   printf(" Input a sentence for the file : ");
   fgets(str, sizeof str, stdin);
   fprintf(fptr,"%s",str);
   fclose(fptr);
   printf("\n The file %s created successfully...!!\n\n",fname);
   return 0;
}

Sample Output:

 Create a file (test.txt) and input text :                                                                    
----------------------------------------------                                                                
 Input a sentence for the file : This is the content of the file test.txt                                     
                                                                                                              
 The file test.txt created successfully...!!

Flowchart:

For more Practice: Solve these Related Problems:

Write a C program to create a text file and write user input to it line by line until a termination string is entered.
Write a C program to create a text file with a timestamp in its name and store a fixed paragraph into it.
Write a C program to create a file and then append system environment information to it using file I/O functions.
Write a C program to create a file and then write both numeric and string data formatted in a table.

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