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C語言編程計算第二天日期示例代碼，希望本文所述對大家編程有所幫助，需要的朋友可以參考借鑒，下面來一起看看吧。
#include
#include
#include
#include
int year, month, day;
const int day_30 = 30;
const int day_31 = 31;
int day_month_2 = 0;
char err_flag = 0;
void compute()
{
?printf("輸入年月日(1992-7-19)：");
?scanf("%d-%d-%d",&year, &month, &day);
?if((year%4==0 && year%100!=0) || (year%400==0))
?{
??day_month_2 = 29;
?}
?else
?{
??day_month_2 = 28;
?}
?if(month>=1 && month?{
??if(month == 2)
??{
???if(day > day_month_2)
???{
????err_flag = 1;
???}
???else if(day == day_month_2)
???{
????month++;
????day = 1;
???}
???else
???{
????day++;
???}
??}
??else if(month==1 || month==3 || month==5 || month==7 ||/
????month==8 || month==10 || month==12)
??{
???if(day > day_31)
???{
????err_flag = 1;
???}
???else if(day == day_31)
???{
????month++;
????day = 1;
???}
???else
???{
????day++;
???}
??}
??else
??{
???if(day > day_30)
???{
????err_flag = 1;
???}
???else if(day == day_30)
???{
????month++;
????day = 1;
???}
???else
???{
????day++;
???}
??}
??if(month > 12)
??{
???year++;
???month = 1;
??}
?}
?else
?{
??err_flag = 1;
?}
}
int main()
{
?time_t now;
?char ch, c;
?char call_cal[30];
?do
?{
??compute();
??if(err_flag)
??{
???err_flag = 0;
???printf("日期輸入錯誤，調用cal命令查詢%d年%d月：/n/n",year, month);
???sprintf(call_cal, "/usr/bin/cal %d %d",month, year);
???system(call_cal);
???//system("clear");
???while((c=getchar())!='/n' && (c=getchar())!=EOF);
???printf("是否重新輸入(y/n)：");
??}
??else
??{
???printf("第二天為%d-%d-%d。/n",year, month, day);
???while((c=getchar())!='/n' && (c=getchar())!=EOF);
???printf("是否再次輸入日期(y/n)：");
??}
??ch = getchar();
?}
?while(ch=='y' || ch=='Y' || ch=='/n');
?time(&now);
?printf("Now is %s",ctime(&now));
?puts("Having a goodday!");
?return 0;
}
以上就是C語言編程計算第二天日期示例代碼，是不是特別的實用呢，更多關于C語言的內容請繼續關注武林技術頻道。
