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C Programming Exercises

C Exercises: Create a file and input text

C File Handling : Exercise-1 with Solution

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:

Flowchart: Create a file (test.txt) and input text

C Programming Code Editor:

#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;
}

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