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