Function which is returning pointer to function in c programming.

#include <math.h>

double (*lic())(double);

double(*p)(double);

void main(){

    p=lic();

    clrscr();

    printf("%.2lf",(*p)(M_PI_4));

    getch();

}

double (*lic())(double){

       p=&sin;

       return p;

}

Output:0.71

ONE MORE EXAMPLE:

float calculate();

float (*show())();

void main(){

float b;

clrscr();

b=(*show())();

printf("%f",b);

getch();

}

float calculate(){

float a=5.5;

a+=5<=5;

return a;

}

float (*show())(){

return calculate;

}

Output: 6.5000000