include <stdio.h>#include <string>int main(){char id[18] = "";printf("input your identify card:\n");fgets(id, 18, stdin);char year[4] = "";char month[2] = "";char day[2] = "";memcpy(year, id + 6, 4);memcpy(month, id + 10, 2);memcpy(day, id + 12,...