exercice04 en langage c

موضوع: exercice04 en langage c الأحد ديسمبر 19, 2010 9:03 am

expressions arithmétiques (expressions, branchements conditionnels)
#include
#include
using namespace std;

main()
{
double x; // declaration
double resultat;
cout << "Entrez un nombre reel : "; // message
cin >> x; // lecture de x

// Expression 1
cout << "Expression 1 : ";
if (x == 0.0) {
cout << "indefinie" << endl;
}
else {
resultat = x / (1.0 - exp(x));
cout << resultat << endl;
}

// Expression 2
cout << "Expression 2 : ";
if ((x <= 0.0) || (x == 1.0)) {
cout << "indefinie" << endl;
}
else {
resultat = x * log(x) * exp( 2.0 / (x-1.0) ) ;
cout << resultat << endl;
}

// Expression 3
cout << "Expression 3 : ";
if ( (x > 0.0) && (x < 8.0) ) {
cout << "indefinie" << endl;
}
else {
resultat = ( -x - sqrt(x*x - 8.0*x) ) / (2.0-x) ;
cout << resultat << endl;
}

// Expression 4
cout << "Expression 4 : ";
if ((x <= 1.0 ) && (x >= 0.0)) {
cout << "indefinie" << endl;
} else {
resultat = (sin(x) - x/20.0) * log(sqrt(x*x - 1.0/x));
if (resultat < 0.0) {
cout << "indefinie" << endl;
} else {
cout << sqrt(resultat) << endl;
}
}
}

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