#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int main()
{ 
FILE*f;
char s[]="éàùàâêï";        
char u[]={0x82,0x85,0x97,0x85,0x83,0x88,0x8B,0}; 
int i;

	f=fopen("test.txt","w");
	if (f){
		printf("%s\n",s);			// 1
		fprintf(f,"%s\n",s);      

		for(i=0; i<strlen(s); i++){		// 2
			printf(" %X", (unsigned char) s[i]);
			fprintf(f," %X", (unsigned char) s[i]);
		}
		printf("\n");
		fprintf(f,"\n");

		printf("%s\n",u);     // 3
		fprintf(f,"%s\n",u);    
		fclose(f);
	}
    
    system("PAUSE");
    return 0;
}