CALCULATRICE, ESTIMATEUR DE PI, OPÉRATEURS BINAIRES, TABLEAUX

#include <stdio.h>
#include <conio.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>

void Calculatrice(void);
void EstimationPi(void);
void Operateurs(void);
void Tableaux(void);
void Fichiers(void);

int MenuCalcul(void);
void Fin(void);
void Creation(void);
void Lecture(void);
void Modif(void);
char Menu(void);

struct enreg {
  char nom[20];
  int age;
};
struct enreg bloc;

char nomfich[15];

int main() {
	clrscr();
	MenuCalcul();
return 0;
}

int MenuCalcul() {
int ch;	
	
clrscr();
puts(" Programmes :");
puts("  -1- Calculatrice");
puts("  -2- Estimation de pi");
puts("  -3- Operateurs binaires");
puts("  -4- Tableaux");
puts("  -5- Quitter");
printf("\n\n       Choix : ");scanf("%d",&ch);

	switch(ch) {
		case 1:Calculatrice();break;
		case 2:EstimationPi();break;
		case 3:Operateurs();break;
		case 4:Tableaux();break;
		case 5:Fin();break;
	}
return ch;
}

void Fin() {
	clrscr();
	puts("Fin du programme");
}

// Définition de la fonction EstimationPi()
void EstimationPi() {
	
unsigned int np,nc,i,x,y,d2;
char c;
int mp;

do {
	clrscr();
   puts("Estimation de pi\n");
   printf("\nnombre de points = ");scanf("%d",&np);
   randomize();
   
   for(nc=0,i=1;i<np;i++) {
      x=random(100);
      y=random(100);
      d2=(x-100)*(x-100)+(y-100)*(y-100);
      if(d2<=10000) nc++;
   }
   printf("\npi=%f\n",(4.0*nc)/np);
   printf("\non continue (o/n) : "); c=getche();
}
while(c=='o');
MenuCalcul();
}

// Définition de la fonction Operateurs()
void Operateurs() {
  int x,y,mp;
  char c;

  do {
  	  clrscr();
     puts("Operateurs binaires\n");
     puts("saisir deux nombres entiers en hexadecimal");
     printf("x=\n");scanf("%x",&x);
     printf("y=\n\n");scanf("%x",&y);
     
     printf("~x=%04X\n",~x);
     printf("x&y=%04X\n",x&y);
     printf("x^y=%04X\n",x^y);
     printf("x|y=%04X\n",x|y);
     printf("x&~y=%04X\n",x&~y);
     printf("x|~y=%04X\n",x|~y);
     printf("x>>3=%04X\n",x>>3);
     printf("x<<5=%04X\n",x<<5);
     printf("x&~x=%04X\n",x&~x);
     printf("x^~x=%04X\n",x^~x);
     printf("x|~x=%04X\n",x|~x);
     printf("x&~y<<8=%04X\n",x&~y<<8);
     printf("(x&~y)<<8=%04X\n",(x&~y)<<8);
     printf("x&~(y<<8)=%04X\n",x&~(y<<8));
     printf("x^~y<<8=%04X\n",x^~y<<8);
     printf("(x^~y)<<8=%04X\n",(x^~y)<<8);
     printf("x^~(y<<8)=%04X\n",x^~(y<<8));
     printf("x|~y<<8=%04X\n",x|~y<<8);
     printf("(x|~y)<<8=%04X\n",(x|~y)<<8);
     printf("x|~(y<<8)=%04X\n",x|~(y<<8));

     printf("\n Recommancer (o/n)");c=getch();     
  }
  while(c=='o');
MenuCalcul();
}

// Définition de la fonction Tableaux()
void Tableaux() {
  int e,n,i,j,s,mp;
  char c;
  int tab[4][7]={{1,3,5,2,6,4,0},{13,12,11,14,10,15,0},{11,7,9,8,12,10,0},{17,14,18,16,15,13,0}};
  float moy[4],k;

do {  
  clrscr();
  puts("  Tableaux\n\n");
  
  //affichage tab
  for(e=0;e<4;e++) {
    printf("\ntab _%d : ",e+1);
    for(n=0;n<6;n++) printf("%3d",tab[e][n]);
  }
  
  //total tab
  puts("");
  for(e=0;e<4;e++) {
    for(n=0,s=0;n<6;n++) s=s+tab[e][n];
    tab[e][n]=s;
    printf("\ntotal _%d=%d",e+1,s);
  } 
  
  //moyenne
  puts("");
  for(e=0;e<4;e++) {
    printf("\nmoyenne _%d=",e+1);
    moy[e]=(float)tab[e][6]/6;
    printf("%5.2f",moy[e]);
  }
  
  printf("\n\nRecommancer (o/n)");c=getch();
  }
while(c=='o');
MenuCalcul();
}

// Définition de la fonction Calculatrice()
void Calculatrice() {
  long int x,y;
  char c;
  int mp;

do {  
  clrscr();
  
  puts("Calculatrice en C\n\n");
  printf("x=");scanf("%ld",&x);
  printf("y=");scanf("%ld",&y);
  printf("\n\nx=%ld y=%ld\n",x,y);
  printf("\naddition x+y = %ld\n",x+y);
  printf("soustraction x-y = %ld\n",x-y);
  printf("division x/y = %ld\n",(float)x/y);
  printf("multiplication x*y = %ld\n",(long)x*y);
  puts("\n\n Recommencer (o/n)");
  c=getch();
  }
while(c=='o');
MenuCalcul();
}