int iTaVar
// scanf() ou autre..
float fTaVar = (float)iTaVar
// Ton code continue..

   double nombre = 1e25;
   
   nombre++;
   if (nombre != 1e25)
      printf("La valeur de la variable est differente.\n");
   else
      printf("La valeur de la variable est la meme.\n");

   if (0.1 + 0.2 != 0.3)
      printf("le calcul est faux\n");

long resultat = 0, nombre1 = 0; //déclare les variables
double taille = 0, imc2 = 0, imc= 0, nombre2 = 0;
printf("IMC :\n\n");
printf("taper votre poid ( en Kg )\n");
scanf("%ld", &nombre1);
printf("\nTapez Votre Taille ( en Centimetre ) \n");
scanf("%ld", &nombre2);
taille = nombre2 / 100.0; // taille en metres

int x = 74; /* entier */
double y = x; /* flottant */

scanf("%ld", &nombre2);
taille = nombre2 / 100.0; // taille en metres

Project : Forums
Compiler : GNU GCC Compiler (called directly)
Directory : C:devforums2
--------------------------------------------------------------------------------
Switching to target: default
Compiling: main.c
main.c:3: error: syntax error before string constant
main.c:3: warning: type defaults to `int' in declaration of `printf'
main.c:3: warning: conflicting types for built-in function 'printf'
main.c:3: warning: data definition has no type or storage class
main.c:4: error: syntax error before string constant
main.c:4: warning: type defaults to `int' in declaration of `printf'
main.c:4: warning: data definition has no type or storage class
main.c:5: error: syntax error before string constant
main.c:5: warning: type defaults to `int' in declaration of `scanf'
main.c:5: warning: conflicting types for built-in function 'scanf'
main.c:5: warning: data definition has no type or storage class
main.c:6: error: syntax error before string constant
main.c:6: warning: type defaults to `int' in declaration of `printf'
main.c:6: warning: data definition has no type or storage class
main.c:7: error: syntax error before string constant
main.c:7: warning: type defaults to `int' in declaration of `scanf'
main.c:7: warning: data definition has no type or storage class
main.c:8: warning: type defaults to `int' in declaration of `taille'
main.c:8: error: conflicting types for 'taille'
main.c:2: error: previous definition of 'taille' was here
main.c:8: error: initializer element is not constant
main.c:8: warning: data definition has no type or storage class
main.c:9: warning: type defaults to `int' in declaration of `imc2'
main.c:9: error: conflicting types for 'imc2'
main.c:2: error: previous definition of 'imc2' was here
main.c:9: warning: implicit declaration of function `pow'
main.c:9: error: initializer element is not constant
main.c:9: warning: data definition has no type or storage class
main.c:10: warning: type defaults to `int' in declaration of `imc'
main.c:10: error: conflicting types for 'imc'
main.c:2: error: previous definition of 'imc' was here
main.c:10: error: initializer element is not constant
main.c:10: warning: data definition has no type or storage class
main.c:11: error: syntax error before string constant
main.c:11: warning: type defaults to `int' in declaration of `printf'
main.c:11: warning: data definition has no type or storage class
main.c:11:27: warning: no newline at end of file
Process terminated with status 1 (0 minutes, 4 seconds)
15 errors, 22 warnings

/* -ed- poster du code complet sinon,
on ne sait pas ce que tu as oublie reellement */

#include <stdio.h>
#include <math.h>

int main (void)
{
   long resultat = 0, nombre1 = 0; //déclare les variables
   double taille = 0, imc2 = 0, imc = 0, nombre2 = 0;
   printf("IMC :\n\n");
   printf("taper votre poid ( en Kg )\n");
   scanf("%ld", &nombre1);
   printf("\nTapez Votre Taille ( en Centimetre ) \n");
   scanf("%ld", &nombre2);
   taille = nombre2 / 100.0; // taille en metres
   imc2 = pow(taille, 2); // taille au carré
   imc = nombre1 / imc2; // poid divisé par taille^2
   printf("\n\n\n%ld ", imc);

   return 0;
}

Project : Forums
Compiler : GNU GCC Compiler (called directly)
Directory : C:devforums2
--------------------------------------------------------------------------------
Switching to target: default
Compiling: main.c
main.c: In function `main':
main.c:14: warning: long int format, double arg (arg 2)
main.c:18: warning: long int format, double arg (arg 2)
main.c:8: warning: unused variable `resultat'
Linking console executable: C:devforums2console.exe
Process terminated with status 0 (0 minutes, 1 seconds)
0 errors, 3 warnings

#include <stdio.h>
#include <math.h>

int main (void)
{
   long poids = 0; //déclare les variables
   double taille_m = 0, taille_m_2 = 0, imc = 0, taille_cm = 0;

   printf("IMC :\n\n");
   printf("taper votre poid (en Kg)\n");
   scanf("%ld", &poids);
   printf("\nTapez Votre Taille (en Centimetre)\n");
   scanf("%lf", &taille_cm);
   taille_m = taille_cm / 100.0; // taille en metres
   taille_m_2 = pow(taille_m, 2); // taille au carré
   imc = poids / taille_m_2; // poid divisé par taille
   printf("\n\nvotre IMC est de %lf \n", imc);

   return 0;
}

#include <stdio.h>
#include <math.h>

int main (void)
{
   double poids = 0;
   long taille_cm = 0;

   printf("Calcluez votre IMC\n\n");

   printf("taper votre poid (en Kg)\n");
   scanf("%lf", &poids);

   printf("\nTapez Votre Taille (en Centimetre)\n");
   scanf("%ld", &taille_cm);

   {
      double taille_m = taille_cm / 100.0; // taille en metres
      double taille_m_2 = pow(taille_m, 2); // taille au carré
      double imc = poids / taille_m_2; // poid divisé par taille
      printf("\n\nvotre IMC est de %lf \n", imc);
   }
   return 0;
}