C语言编程:求n天后的日期答://#include "stdafx.h"//If the vc++6.0, with this line.#include "stdio.h"#include "time.h"struct tm *SecondDay(int y,int m,int d){ struct tm tm={0,0,0,d,m,y,}; time_t lt=mktime(&tm)+86400; return localtime(<);}int main(void){ int year,mo...