/in/ex5.cpp: In function 'int main()':
/in/ex5.cpp:29:18: error: 'myp1' was not declared in this scope
     int a3 = cal(myp1, myp2, myp3, myp4) - 8;
                  ^~~~
/in/ex5.cpp:29:18: note: suggested alternative: 'mp1'
     int a3 = cal(myp1, myp2, myp3, myp4) - 8;
                  ^~~~
                  mp1
/in/ex5.cpp:29:24: error: 'myp2' was not declared in this scope
     int a3 = cal(myp1, myp2, myp3, myp4) - 8;
                        ^~~~
/in/ex5.cpp:29:24: note: suggested alternative: 'mp2'
     int a3 = cal(myp1, myp2, myp3, myp4) - 8;
                        ^~~~
                        mp2
/in/ex5.cpp:29:30: error: 'myp3' was not declared in this scope
     int a3 = cal(myp1, myp2, myp3, myp4) - 8;
                              ^~~~
/in/ex5.cpp:29:30: note: suggested alternative: 'mp3'
     int a3 = cal(myp1, myp2, myp3, myp4) - 8;
                              ^~~~
                              mp3
/in/ex5.cpp:29:36: error: 'myp4' was not declared in this scope
     int a3 = cal(myp1, myp2, myp3, myp4) - 8;
                                    ^~~~
/in/ex5.cpp:29:36: note: suggested alternative: 'mp4'
     int a3 = cal(myp1, myp2, myp3, myp4) - 8;
                                    ^~~~
                                    mp4