Function Constructor?

[BrokenSilenceDev]

Does anyone know why FPS() wants a contructor, or how to use % properly?
std::string s = "FPS-%",convertInt(FPS());

Thanks in advance.

[BrokenSilenceDev]

Heres the error log if it helps.

error C2664: 'std::basic_string<_Elem,_Traits,_Ax>::basic_string(const std::basic_string<_Elem,_Traits,_Ax> &)' : cannot convert parameter 1 from 'int' to 'const std::basic_string<_Elem,_Traits,_Ax> &'
1> with
1> [
1> _Elem=char,
1> _Traits=std::char_traits<char>,
1> _Ax=std::allocator<char>
1> ]
1> Reason: cannot convert from 'int' to 'const std::basic_string<_Elem,_Traits,_Ax>'
1> with
1> [
1> _Elem=char,
1> _Traits=std::char_traits<char>,
1> _Ax=std::allocator<char>
1> ]
1> No constructor could take the source type, or constructor overload resolution was ambiguous

[eypros]

What does your FPS() do? What's its prototype? What is the prototype of convertInt()?
And finally why do you write a comma here?

std::string s = "FPS-%",convertInt(FPS());

[happykiller]

And please show me code.

[BrokenSilenceDev]

ah ok
This is the whole code

#include "stdafx.h"
//#include <GL/GL.h>
#include <GL/glut.h>
#include <sstream>
#include <stdio.h>
#include <time.h>
#include <math.h>
#include <iostream>
#include <sstream>
int framecount = 0;
int tFPS;
int st = 0;
std::string convertInt(int number)
{

   std::stringstream ss;//create a stringstream
   ss << number;//add number to the stream
   return ss.str();//return a string with the contents of the stream
}
int FPS()
{
	framecount++;
	if(clock()-st>=1000)
	{
		tFPS = framecount;
		framecount = 0;
		//tFPS = framecount;
		st = clock();
		//system("PAUSE"); 
	}	
	return tFPS;
}
void text()
{
	glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluOrtho2D(0.0,200, 0.0,200);

glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glColor3f(0.0, 1.0, 0.0); // Green
glRasterPos2i(50, 200-10);
std::string s = "FPS-%",convertInt(FPS());
void * font = GLUT_BITMAP_9_BY_15;
for (std::string::iterator i = s.begin(); i != s.end(); ++i)
{
    char c = *i;
    glutBitmapCharacter(font, c);
}
	glMatrixMode(GL_MODELVIEW);
glPopMatrix();

glMatrixMode(GL_PROJECTION);
glPopMatrix();
}


void display()
{
	glClear(GL_COLOR_BUFFER_BIT);
	text();
glFlush();
glutPostRedisplay();

}
int _tmain(int iArgc, char* cppargv[])
{
	glutInit(&iArgc,cppargv);
	glutCreateWindow("Framerate");
	glutDisplayFunc(display);
	glutMainLoop();
}

[Peter87]

Use + instead of ,
std::string s = "FPS-%" + convertInt(FPS());