C / C++ / MFC

hasani2007 wrote:

printf("%f\n%f",solver(a,b,c));

hasani2007 wrote:

return(x1,x2);

void solver(float a,float  b, float c, float &outX1, float &outX2){
  ...
  outX1 = x1;
  outX2 = x2;
}

...
float x1, x2;
solver(a,b,c,x1,x2)
printf("%f\n%f",x1,x2);
...

struct result
{
  float x1;
  float x2;
};

result solver(float a,float  b, float c){
  ...
  result res;
  res.x1 = x1;
  res.x2 = x2;
  return res;
}

...
result res = solver(a,b,c);
printf("%f\n%f",res.x1,res.x2);
...

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


float x1,x2;

bool solver(float a,float b, float c)
{
	float delta = sqrt( (b*b) - (4*a*c) );

    if (!a)  return false; 
 
    x1 = ( -b + delta)/(2*a);
    x2 = ( -b - delta)/(2*a);

	return true;
}


int main()
{
	float a=2,
              b=4,
              c=-30; 
	

/*
 	printf("a = ");
	scanf("%f", &a);
	printf("b = ");
	scanf("%f", &b);
	printf("c = ");
	scanf("%f", &c);

*/

if ( solver(a, b ,c) ) 	printf("x1=%f\nx2=%f\n",x1,x2);
 
return 0;
} 

#include <stdio.h>

#include <math.h>

bool solver(float a,float b, float c, float &x1, float &x2)
{
	float delta = sqrt( (b*b) - (4*a*c) );

    if (!a)  return false; 
 
    x1 = ( -b + delta)/(2*a);
    x2 = ( -b - delta)/(2*a);

	return true;
}


int main()
{
	float a=2,
              b=4,
              c=-30; 
	

/*
 	printf("a = ");
	scanf("%f", &a);
	printf("b = ");
	scanf("%f", &b);
	printf("c = ");
	scanf("%f", &c);

*/

float x1,x2;
if ( solver(a, b ,c, x1, x2) ) 	printf("x1=%f\nx2=%f\n",x1,x2);
 
return 0;
} 

Richard MacCutchan wrote:

Also you cannot compile MFC applications with Express Edition