Thread: Error that I can't figure out.

Hello, I am writing a program for one of my classes and I've worked out all of the errors except one. I've spent the last hour trying to figure out what I've done wrong but I still can't. Any help would be greatly appreciated =)

Code:

#include <stdio.h>

int main()
{

float carbon_amu=12.011;
float hydrogen_amu=1.0079;
float oxygen_amu=15.9994;
float avogadros_number=6.02e23;


int number_of_carbon_atoms=0;
int number_of_hydrogen_atoms=0;
int number_of_oxygen_atoms=0;

float number_of_grams_of_molecule=0;


char molecule_name[80];


   printf("What is the name of your CHO molecule? \n");
   scanf("%s", &molecule_name);
   
   printf("How many carbon atoms are in %s? \n", molecule_name);
   scanf("%d", &number_of_carbon_atoms);
   
   printf("How many hydrogen atoms are in %s? \n", molecule_name);
   scanf("%d", &number_of_hydrogen_atoms);
   
   printf("How many oxygen atoms are in %s? \n", molecule_name);
   scanf("%d", &number_of_oxygen_atoms);
   
   printf("How many grams of %s do you have?\n", molecule_name);
   scanf("%f", &number_of_grams_of_molecule);
   
   
   float carbon_mass_per_mole=number_of_carbon_atoms*carbon_amu;
   float hydrogen_mass_per_mole=number_of_hydrogen_atoms*hydrogen_amu;
   float oxygen_mass_per_mole=number_of_oxygen_atoms*oxygen_amu;
   float molecule_mass_per_mole=carbon_mass_per_mole+hydrogen_mass_per_mole+oxygen_mass_per_mole;
   float number_of_molecules=number_of_grams_of_molecule/molecule_mass_per_mole*avogadros_number;
   
   
   printf(" \n");
   printf("Results:\n");
   printf("--------\n");
   printf("The mass of carbon in %f is:\n", carbon_mass_per_mole);
   printf("The mass of hydrogen in %f is:\n", hydrogen_mass_per_mole);
   printf("The mass of oxygen in %f is:\n", oxygen_mass_per_mole);
   
   
   printf("--------------------------------------------------------\n");
   printf("The number of %s molecules in %f grams is %f\n", molecule_name, number_of_grams_of_molecule, number_of_molecules);
   
}

The error that I have been getting is:

a03.c: In function 'main':
a03.c:25:4: warning: format '%s' expects type 'char *', but argument 2 has type 'char (*)[80]'


Thanks again in advance!

Also, I deleted the comment that I posted at the beginning of the program so the line that the error is occurring on should actually be 23. Sorry for any confusion.

Perfect, thanks a lot for the help.