Q50

Consider the following ANSI-C program. #include <stdio.h> int main(){ int *ptr, a, b, c; a=5; b=11; c=20; ptr=&a; *ptr=c; ptr=&c; a=*(&b); c=*ptr-a; printf("%d",c); return(0); } The output of this program is $\_\_\_\_$ . (answer in integer) Note: Assume that the program compiles and runs successfully.