Error message (codeblocks)

/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp||In function ‘cents operator+(cents, cents)’:|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|18|error: no matching function for call to ‘cents::cents(cents)’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|18|note: candidates are:|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|10|note: cents::cents(cents&)|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|10|note:   no known conversion for argument 1 from ‘cents’ to ‘cents&’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|9|note: cents::cents(int)|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|9|note:   no known conversion for argument 1 from ‘cents’ to ‘int’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp||In function ‘cents operator+(cents, int)’:|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|23|error: no matching function for call to ‘cents::cents(cents)’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|23|note: candidates are:|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|10|note: cents::cents(cents&)|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|10|note:   no known conversion for argument 1 from ‘cents’ to ‘cents&’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|9|note: cents::cents(int)|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|9|note:   no known conversion for argument 1 from ‘cents’ to ‘int’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp||In function ‘cents operator+(int, cents)’:|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|28|error: no matching function for call to ‘cents::cents(cents)’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|28|note: candidates are:|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|10|note: cents::cents(cents&)|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|10|note:   no known conversion for argument 1 from ‘cents’ to ‘cents&’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|9|note: cents::cents(int)|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|9|note:   no known conversion for argument 1 from ‘cents’ to ‘int’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp||In function ‘int main()’:|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|41|error: no matching function for call to ‘cents::cents(cents)’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|41|note: candidates are:|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|10|note: cents::cents(cents&)|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|10|note:   no known conversion for argument 1 from ‘cents’ to ‘cents&’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|9|note: cents::cents(int)|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|9|note:   no known conversion for argument 1 from ‘cents’ to ‘int’|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp||In function ‘cents operator+(cents, cents)’:|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|19|warning: control reaches end of non-void function [-Wreturn-type]|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp||In function ‘cents operator+(cents, int)’:|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|24|warning: control reaches end of non-void function [-Wreturn-type]|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp||In function ‘cents operator+(int, cents)’:|
/home/justin/Stuff_backup_at_all_times/Sum_test_on_classes/main.cpp|29|warning: control reaches end of non-void function [-Wreturn-type]|
||=== Build finished: 4 errors, 3 warnings (0 minutes, 0 seconds) ===|