Tutorial#3 if..../if.....else/if.....else if/ switch Solution

Q1: What is the output of these code: Code1: int n, k = 5; n = (100 % k ? k + 1 : k - 1); n=4

Code2: int a = 4, b = 2, c = 5; if(a > b) a= 5; if(c == a) { a = 6; c = 3; } else a = 7; cout << “a is : “<<a ; cout << “c is : “<<c ; a is: 6 c is:3

Code3 int x; int y; x=2; y=5; if(x = y) { cout <<"x is equal to y"; cout << "x+y=" << x+y<<","<<"y++="<<y++; } else cout << "x is not equal to y"; x is equal to y x+y= 10, y++=5

Code4 int x=5; switch (x) { cout << “$$$$”<< endl; case 1: x=x+2; break; case 3: x=x+1; case 5: if (x==4) x=x+6; case 6: x=x+3; break; default: x=x-1; } cout << x<< endl; 8

Q2: Convert the following switch statement to if statement int value = 0, input ; cin>>input; switch(input) { case 1: value+=4; break; case 2: value+=3; break; case 3: value+=2; break; default: value++; } if(input==1) value+=4; else if(input==2) value+=3; else if(input==3) value+=2; else value++;

Q3: Rewrite the following fragment using switch if (letter == ‘R’) cout <<“Red”; else if (letter ==‘Y’ ) cout<<“Yellow”; else if (letter == ‘W’) cout<<“White”; else cout<<“ No color “; switch(letter) { case ‘R’: cout<<“Red”; break; case ‘Y’: cout<<“Yellow”; break; case ‘W’: cout<<“White”; break; default: cout<<“No color”; }

Write a C++ program to find absolute value of negative number. Write a C++ program to test a number is negative number or positive number.