Can someone help point out what I'm missing in my addIntToEndOfList function? In order for it to pass all the tests? Thanks

PASSED: linkedListToString(list) PASSED: list->head->data42 PASSED: list->tail->data 25 FAILED: list after adding 25 Expected: [42]-[571->I611->[25]-null Actual: [42]->[571->[611->null PASSED: list->head->data42 PASSED: list->tail->data 31 FAILED: ist after adding 31 Expected: [42]->[57]->[61]->[25]->[31]->null Actual: [42]->[57]->[61]->null PASSED: list->headNULL PASSED: list->tailNULL) PASSED: linkedListToString(list) PASSED PASSED: list->head->data7 PASSED PASSED: list->tail->data7) PASSED: list after adding 7 PASSED: list != NULL PASSED: list->headlist-tail hot 0. FAILED: ist after adding -6 Expected: [71->C-6]->null Actual: [71-null PASSED: PASSED: list->head->data7 PASSED PASSED: list-tail->data 6) Screen Shot