Initial commit

c++/Others/Time arithmatic.cpp

@@ -0,0 +1,115 @@
+Time arithmatic
+
+#include<stdio.h>
+#include<conio.h>
+
+typedef struct
+{
+	int hh,mm,ss;
+}time;
+
+time add(time f,time s);
+time sub(time f,time s);
+time input(void);
+
+void main()
+{
+	time f,s,ans;
+	int ch;
+	clrscr();
+	do
+	{
+		printf("\n <1> enter first operand ");
+		printf("\n <2> enter second operand ");
+		printf("\n <3> time addition ");
+		printf("\n <4> time subtraction ");
+		printf("\n <5> Exit \n\n");
+		do
+		{
+			printf("enter your choice ");
+			scanf("%d",&ch);
+		}while(ch<1 || ch>5);
+		switch (ch)
+		{
+			case 1:
+				printf("\n enter the time(hh mm ss) ");
+				f=input();
+				break;
+			case 2:
+				printf("\n enter the time(hh mm ss) ");
+				s=input();
+				break;
+			case 3:
+				ans=add(f,s);
+				printf("\n time addition is %d %d %d",ans.hh,ans.mm,ans.ss);
+				break;
+			case 4:
+				ans=sub(f,s);
+				printf("\n time subtraction is %d %d %d",ans.hh,ans.mm,ans.ss);
+				break;
+		}
+	}while(ch!=5);
+}
+
+time input(void)
+{
+	time temp;
+	do
+	{
+		printf("\n enter the hours : ");
+		scanf("%d",&temp.hh);
+	}
+	while(temp.hh<0 || temp.hh>12);
+	do
+	{
+		printf("\n enter the minutes : ");
+		scanf("%d",&temp.mm);
+	}
+	while(temp.mm<0 || temp.mm>=60);
+	do
+	{
+		printf("\n enter the seconds : ");
+		scanf("%d",&temp.ss);
+	}
+	while(temp.ss<0 || temp.ss>=60);
+	return temp;
+}
+time add(time x,time y)
+{
+	time a;
+	if(x.ss+y.ss>60)
+		++x.mm,a.ss=(x.ss+y.ss)%60;
+	else
+		a.ss=x.ss+y.ss;
+	if(x.mm+y.mm>60)
+		++x.hh,a.mm=(x.mm+y.mm)%60;
+	else
+		a.mm=x.mm+y.mm;
+	if(x.hh+y.hh>12)
+		a.hh=(x.hh+y.hh)%12;
+	else
+		a.hh=x.hh+y.hh;
+	if(a.hh==0)
+		a.hh=12;
+	return a;
+}
+
+time sub(time x,time y)
+{
+	time a;
+	if(x.ss-y.ss<0)
+		--x.mm,a.ss=60+x.ss-y.ss;
+	else
+		a.ss=x.ss-y.ss;
+	if(x.mm-y.mm<0)
+		--x.hh,a.mm=60+x.mm-y.mm;
+	else
+		a.mm=x.mm-y.mm;
+	if(x.hh-y.hh<0)
+		a.hh=12+x.hh-y.hh;
+	else
+		a.hh=x.hh-y.hh;
+	if(a.hh==0)
+		a.hh=12;
+	return a;
+}