first copy the rewite the code on codeblock. #include <stdio.h> int main () { /* my first program in C */ printf ( "Hello, World! \n" ); return 0 ; } first you should write "#include<stdio.h> on code bloce on any kind of c++ compailer. then you have to write the main function.int main.printf is "displing hellow, world" on the disply.and last curly bracate is for ending the programe .you must the save the code in cpp extention.