Program in C to write and read name in/from file

• Program in C to write name in file

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
 int main()
  {
   FILE *file;
   char name[20];
   file=fopen("Test.txt","w");
   if(file==NULL) //if(!file) //if(file==0) 
     {
      printf("Error in creating file!.");
      exit(0);
   }
 printf("Enter your name:-");
 gets(name);
 fputs(name,file);
 close(file);
 return 0;
  }

Output:-

• Program in C to read name from file

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
 int main()
  {
   FILE *file;
   char name[20];
   file=fopen("Test.txt","r");
   if(file==NULL) //if(!file) //if(file==0) 
     {
      printf("File is not found.");
      exit(0);
   }
 printf("Your given name :-");
 fgets(name,20,file);
 printf("%s",name);
 close(file);
 return 0;
  }

Output:-

NOTE 
   Write mode : If file is not available in the folder where source file is available then compiler create file same name as the given file's name in the fopen() function.

Read mode : If file is not available in the folder where source file is available then fopen() function
returns 0 value (means file is not found ). So file reading Process is not performed

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