What is the error in this will any one correct this code pls .

Question

#include <iostream>
#include <math.h>
using namespace std;

int area (int);
float area (float, float);
float area (float, float, float);

int main()
{
int side;
float 1,w, si, s2, s3;
cout <<endl<< "Enter side of a Square: ";
cin>> side;
cin>> l >>w;
cin>> s1 >> s2 >> 53;
cout <<endl<< "Enter length and width of a rectangle:";
cout <<endl<< "Enter three sides of a triangle: ";
cout <<endl<< "Area of a Square= "; <<area (side);
cout <<endl<< "Area of a Rectangle= "; <<area (1,w);
cout <<endl<< "Area of a triangle= "; <<area (s1, s2, s3);
return 0;
}
int area (int a)
{
return (a*a);
}
float area (float i, w)
{
return (1*w);
}
float area (float si, float s2, float s3)
{
float s, a;
s = (a + b + c)/2;
a = sqrt (s * (s - sl) * (s - s2) * (s - s3);
return (a);

Answer 1

#include <iostream>
#include <math.h>
using namespace std;

int area(int);

float area (float, float);
float area (float, float, float);

int main()
{
int side;
float l,w, s1, s2, s3; //1

cout << "Enter side of a Square: ";
cin >> side;
cout<<endl<< "Area of a Square= "<< area(side); //2

cout <<endl<<"\nEnter length and width of a rectangle:";
cin>> l >> w;
cout <<endl<<"Area of a Rectangle= "<<area(l,w); //3

cout<<endl<<"\nEnter three sides of a triangle:";
cin>> s1 >> s2 >> s3;
cout <<"\nArea of a triangle= "<<area(s1,s2,s3); //4

return 0;
}

int area(int a) {
return a*a;
}

float area(float l, float w) //5
{
return l*w;
}

float area(float s1, float s2, float s3)
{
float s, a;
s = (s1 + s2 + s3)/2; //6
a = sqrt (s * (s - s1) * (s - s2) * (s - s3)); //7

return a;
}

//just compare with your program, you can find correction made. added // where I changed
//share code link by saving ..
hope it helps....

Answer 2

You have too many errors, so try to build it again: "write one command - check its performance and only then write the next command".
Happy coding. ☺️

#include <iostream>
#include <math.h>
using namespace std;

int area(int a)
{
return (a*a);
}
/*
float area (float, float);
float area (float, float, float);
*/
int main()
{
int side;
//float 1,w, si, s2, s3;
cout <<endl<< "Enter side of a Square: ";
cin >> side;
//cin>> l >>w;
//cin>> s1 >> s2 >> 53;
//cout <<endl<< "Enter length and width of a rectangle:";
//cout <<endl<< "Enter three sides of a triangle: ";
cout <<endl<< "Area of a Square= " << area(side);
//cout <<endl<< "Area of a Rectangle= "; <<area (1,w);
//cout <<endl<< "Area of a triangle= "; <<area (s1, s2, s3);
return 0;
}

/*
float area (float i, w)
{
return (1*w);
}
float area (float si, float s2, float s3)
{
float s, a;
s = (a + b + c)/2;
a = sqrt (s * (s - sl) * (s - s2) * (s - s3);
return (a);
}*/

Answer 3

Pls save code and share link.

This may help you, to share links 👇
https://www.sololearn.com/post/75089/?ref=app

edit :
Rehan Glasswala
is it l or 1 in you code for variable height. you have a typo there.
and you are missing
float area(int l, int w) { //here missing type for w
..
}