C Programming Tchniques & Tips

Swapping of Two Numbers in C or C Program to Swap Two Numbers or C program to Swap two numbers without using a third variable #include <stdio.h> #include <conio.h>  void main() {    int x, y, temp;    clrscr();    // to clear screen       printf("Enter the value of x and y\n");    scanf("%d%d", &x, &y);    printf("Before Swapping\nx = %d\ny = %d\n",x,y);    temp = x;    x    = y;    y    = temp;    /*       without using temp variable, this can be used    let x=4 and y=5    x = x + y ;   x=x+y => x=4+5 => x=9     y = x - y ;   y=x-y => y=9-5 => y=4  value changed    x = x - y ;   x=x-y => x=9-4 => x=5  value changed      */       printf("After Swapping\nx ...

Find the Greatest Time in C or CPP from two different times. Example Code: #include<iostream.h> #include<conio.h> class time { private: int hh,mm,ss; public: void get() { cout<<"\n enter hh,mm,ss:"; cin>>hh>>mm>>ss; } void show() { cout<<"\n hour:"<<hh<<"\n minute:"<<mm<<"\n second:"<<ss; } time greatest(time x) { if (hh>x.ss) return *this; else if(hh>x.hh) return x; else if(mm>x.mm) return *this; else if(mm<x.mm) return x; else if(ss>x.ss) return *this; else return x; } }; void main() { clrscr(); time t1,t2,t3; cout<<"\n enter time1:"; t1.get(); cout<<"\n enter time2:"; t2.get(); t3=t1.greatest(t2); cout<<"\n greatest time:"; t3.show(); getch(); }