cvResize identifier is undefined

All my OpenCV functions are working perfectly fine. But `cvResize()` is not found by the compiler. I guess this function is not installed during installation. The following program tells me the error that cvResize identifier is undefined Is it possible to download this function separately and use it? How? ``` #include "opencv2/highgui/highgui.hpp" #include <iostream> #include <ctype.h> #include <iostream> using namespace std; int main( int argc, char** argv ) { // Create an IplImage object *image IplImage *source = cvLoadImage( argv[1]); // Here we retrieve a percentage value to a integer int percent = atoi(argv[3]); // declare a destination IplImage object with correct size, depth and channels IplImage *destination = cvCreateImage ( cvSize((int)((source->width*percent)/100) , (int)((source->height*percent)/100) ), source->depth, source->nChannels ); //use cvResize to resize source to a destination image cvResize(source, destination); // save image with a name supplied with a second argument cvSaveImage( argv[2], destination ); return 0; } ```