error: expected primary-expression before 'float'

Question

Hey guys I'm new to c++ and I don't know what I'm doing wrong.Can anyone help please.
#include <stdio.h>
#include <math.h>

int main()
{

float y, x;
float root1, root2
float root_part, root_denom

printf('Enter the values of y, x');
scanf('%f%f', &y, &x);

root1 = 2.0 * cos (y * y * sqrt(2.0 * x));
root_part = 4.0 * x + 3.0;
root_denom = 3.0 * x * x + 2.0 * y + 4.0;
root2 = sin * y

f = root1 + ( root_part / root_denom ) + root2

printf('f = %.3f', f)

return 0;

}

Answer 1

You are using [ ] squire brackets but need to use curly brackets { }
int main{
// code
}

put semicolon ; at the end of each expression.
and use double quotes " " in printf....
edit: TaJoX

Answer 2

If you want run this in c++ here, then add iostream header and ask input by cin>>y>>x; instead of scanf(".. ") ;
then it works fine.

don't change original question.. add updates in reply, if you need..

hope it helps..

Answer 3

okay thank you I'll try to change it

Answer 4

I changed it but I still get error messages

Answer 5

I don't know what's wrong but it stil doesn't work

Answer 6

#include <stdio.h>
#include <math.h>
int main()
{

float y, x;
float root1, root2;
float root_part, root_denom;

printf("Enter the values of y, x"); //1
scanf("%f%f", &y, &x); //2

root1 = 2.0 * cos(y * y * sqrt(2.0 * x));
root_part = 4.0 * x + 3.0;
root_denom = 3.0 * x * x + 2.0 * y + 4.0;
root2 = sin(x * y); //3

float f = root1 + ( root_part / root_denom ) + root2; //declare f

printf("f = %.3f", f);

return 0;
}

/*
but it's a complete c code. Works in c++ also. But not properly work for input taking here , unless you have a cin. run it in c.

In your code, corrected mistakes are :

//1, 2 : are wrong quotes errors
//3 : is incomplete sentence
f is undeclared
*/

Answer 7

You're welcome..