File operations relevant code string added

#include <stdio.h> 
#include<stdlib.h>
#include <string.h>
void Fun(char *fname,char st[],int number)
{ 
        FILE *myf;
		int i;
		if(number==0)
		{
        myf=fopen(fname,"w");	
		}
		else
		{
			myf=fopen(fname,"a");
		}
        if (myf == NULL)
        {
            printf("cannot open the file.\n");
            exit(0);
        }
       for(i=0;i<strlen(st); i++)
       {
            fputc(st[i],myf);
       }
       fclose(myf); 
}
int main()
   { 	
    	int number=0;
    	char st1[]="new world";
        Fun("test",st1,number); 
        char st2[]="hello";
        number=1;
        Fun("test",st2,number);
        FILE *fp = fopen("test","r");
        char ch;
        while((ch=fgetc(fp))!=EOF)
		{
        	printf("%c",ch);
		}
		fclose(fp);
        return 0;
   }

* // reproduced in the relevant code Description
function prototype: int fputc (int c, FILE stream);
effect: the character c write stream file

#include <stdio.h>
#include <stdlib.h>
int main(int argc,char *argv[])
{
	FILE *fp;
	char ch;
	if( argc != 2 )
	{
		printf("Usage:%s filename\n\a",argv[0]);
		exit(1);
	}
	if( (fp=fopen(argv[1],"wt+")) == NULL )
	{
		printf("File %s open failed!\n\a",argv[1]);
		exit(1);
	}
	printf("Input a string:");
	ch = getchar();
	while( ch != '\n')
	{
		fputc(ch,fp);
		ch = getchar();
	}
	printf("\n");
	return 0;
}