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Introduction [cont'd]
Input Output Functions [cont'd]
Structures and Unions [cont'd]
# Preprocessor [cont'd]
Append Files in Files of Programming in C
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Append Files 
Append content to a file using a or a+ file open modes.
Program
	#include
	void main(){
	   FILE *fp;
	   char subtitle[] = "Web based tutorial";
	   char ch;
	   int i = 0;
	   fp = fopen("CHAR.txt","a");
	   while((ch = subtitle[i++]) != '\0'){
	       putc(ch,fp);
	   }
	   fclose(fp);    
	}
Output 
Welcome to knowledge wallsWeb based tutorial
Next Topics
Next lessons of current book.
# Preprocessor of Programming in C
# Preprocessor of Programming in C
# Preprocessor of Programming in C
Previous Topics
Previous lessons of current book.
Best Lessons of "Programming in C"
Top lessons which are viewed more times.
Structures and Unions of Programming in C
Input Output Functions of Programming in C
Structures and Unions of Programming in C
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