getting linking error as cal.exe doesnot found. How to resolve this problem? i have done this for my project work. Please help me out.

float *mem;
int X=0, Y=0;
int row=17,col=5;
char dummy;
char flag='d',flagp='0';
char bflag='u',bflagp='u';
int mflag=0;
char ch,ch1,ch2;
int sflag=0;
int midx,midy;
# define UNCLICKED 0
# define CLICKED 1
# define PI 3.14159


char str1[]={"Muhammad Saqib Roll# 014"};

void typeit (int x,int y,int spacing,char string[])
{
    char temp[2];
    for (int i=0;i<strlen(string);i++)>
    {
        delay(100);
        temp[0]=string[i];
        temp[1]='\0';
        outtextxy(x+(i+1)*spacing,y,temp);
    }//endfor
        
    }
void front()
{
    int x,y,h;
    for(x=0;x<=100;x++)
    {
        settextjustify(CENTER_TEXT,CENTER_TEXT);
        setcolor(1);
        settextstyle(1,0,4);
        setusercharsize(x,6,x,3);
        setcolor(14);
        moveto(310,135);
        outtext("..");
        setcolor(6);
        moveto(310,130);
        outtext("I I");
        if(x<50)
        delay(30);
        else
        delay(20);
    }
    for(y=0;y<=100;y++)
    {
        setcolor(0);
        settextstyle(1,0,4);
        setusercharsize(y,6,y,3);
        moveto(310,135);
        outtext("..");
        moveto(310,130);
        outtext("I I");
        if(y>20)
        {
            settextstyle(7,0,3);
            setusercharsize(y-20,35,y-20,30);
            setcolor(9);
            outtext("CALCULATER");
            setcolor(2);
            outtext("___________");
            delay(15);
            if(y<100)
            {
                settextstyle(7,0,3);
                setusercharsize(y-20,35,y-20,30);
                setcolor(0);
                outtext("CALCULATER");
            }
        }
    }