Course link:
https://www.codecademy.com/courses/learn-c-plus-plus/lessons/cpp-conditionals-and-logic/exercises/review
I believe this exercise is wanting me to right a switch code but I was wondering if I could do it as an else if as well. Everything was going going and I could compile and run it, until I put the else statement in:
#include
int main() {
double eweight;
int planet;
std::cout << ("please enter your current Earth weight: ");
std::cin >> eweight;
std::cout << (“1. Mercury\n2. Venus\n3. Mars\n4. Jupiter\n5. Saturn\n6. Uranus\n7. Neptune\n”);
std::cout << ("Please select Planet by listed number: ");
std::cin >> planet;
if (planet == 1) {
double mweight;
mweight = (eweight * 0.38);
std::cout << ("Target weight for Mercury is ") << mweight << “\n”;
}
else if (planet == 2) {
double vweight;
vweight = (eweight * 0.91);
std::cout << ("Target weight for Venus is ") << vweight << “\n”;
}
else if (planet == 3) {
double maweight;
maweight = (eweight * 0.38);
std::cout << ("Target weight for Mars is ") << maweight << “\n”;
}
else if (planet == 4) {
double jweight;
jweight = (eweight * 2.34);
std::cout << ("Target weight for Jupiter is ") << jweight << “\n”;
}
else if (planet == 5) {
double sweight;
sweight = (eweight * 1.06);
std::cout << ("Target weight for Saturn is ") << sweight << “\n”;
}
else if (planet == 6) {
double uweight;
uweight = (eweight * 0.92);
std::cout << ("Target weight for Uranus is ") << uweight << “\n”;
}
else if (planet == 7); {
double nweight;
nweight = (eweight * 1.19);
std::cout << ("Target weight for Neptune is ") << nweight << “\n”;
}
else {
std::cout << “Please retry and be sure to select a planet from 1 to 7\n”;
}
}
This is the error I get when attempting to compile:
$ g++ space.cpp
space.cpp: In function ‘int main()’:
space.cpp:79:1: error: ‘else’ without a previous ‘if’
else {
^~~~
If I comment out the else statement, it will compile and run.
Any advice?