Error: too few arguments to function

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I am trying to write that calculates a distance between 2 points. However i get the error :

error: too few arguments to function ‘getDistance’

I tried debugging and I just cant figure out what is missing there.

What I have tried:

C++

#include <stdio.h>
#include <math.h>

typedef struct Point{
    double x, y;
} Point;

void printPoint(Point p){
    printf("x = %.1lf, y = %.1lf", p.x, p.y);
}

Point createpoint(double x, double y){
    Point p;
    p.x = x, p.y = y;
    return p;
}

double getDistance(Point a, Point b){
    return sqrt(pow((a.x-b.x), 2) + pow((a.y-b.y), 2));
}
    

int main(){
    
    printf("%lf", getDistance(createpoint(2.0, -3.0)), createpoint(-4.0, 5.0));

    return 0;
}

Posted 22-Nov-20 1:53am

Member 14955513

Updated 22-Nov-20 7:53am

KarstenK

v7

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3 solutions

Solution 3

Quote:
I tried debugging and I just cant figure out what is missing there.

No, you didn't.
Debugging comes once your program has compiled cleanly - until that happens no executable file is produced, and so you can't debug anything!

What you have there is a syntax error, which is the compiler telling you you got it wrong and exactly where. So look at the line the error is reported on - the compiler error will tell you the file name and line number - and compare that with yoru function definition:

C++

printf("%lf", getDistance(createpoint(2.0, -3.0)), createpoint(-4.0, 5.0));

C++

double getDistance(Point a, Point b){

getDistance requires two parameters, and you have teh close bracket in teh wrong place, so you are calling it with one. Try this:

C++

printf("%lf", getDistance(createpoint(2.0, -3.0), createpoint(-4.0, 5.0)));

And your error will go away.

Posted 22-Nov-20 2:20am

OriginalGriff

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Patrice T · Accepted Answer · 2020-11-22T02:11:00

Try to replace

C++

printf("%lf", getDistance(createpoint(2.0, -3.0)), createpoint(-4.0, 5.0));

with

C++

printf("%lf", getDistance(createpoint(2.0, -3.0), createpoint(-4.0, 5.0)));

Advice: use professional text editor.
Professional programmer's editors have features likes indentation, parenthesis matching and syntax highlighting.
Notepad++ Home[^]
ultraedit[^]
Enabling Open Innovation & Collaboration | The Eclipse Foundation[^]

W∴ Balboos, *GHB* · Accepted Answer · 2020-11-22T02:17:00

Solution 2

printf(
 "%lf", 
  getDistance(
   createpoint(2.0, -3.0)) 
   , 
   createpoint(-4.0, 5.0)
)

I broke down the statement you used to call the function.

Note the extra ")" - it closes the getDistance() before the second value is create.

Posted 22-Nov-20 2:17am

W∴ Balboos, GHB