c++ - Segmentation fault issue -

i trying make system() command move mouse using xdotool.

the following test program:

int main() {      int x = 10;     int y = 50;      char* str;      sprintf(str, "xdotool mousemove %d, %d", x, y);     system(str); } 

i getting segmentation fault (core dumped) error. there way know of allow such command work? i've tried root way. i'm new c++ , appreciated.

the other answers correct however, can use better methods in c++ rather using sprintf

int main() {     int x = 10;    int y = 50;     std::stringstream ss;    ss <<  "xdotool mousemove " << x << " " << y;    system(ss.str().c_str()); }