z = z =1;z = z + 1z++;
/*
* program3.cpp
*
*
* Created by [redacted] on 11/14/09.
* Copyright 2009 __MyCompanyName__. All rights reserved.
*
*/
#include<iostream>
using namespace std;
int main( int argc, char *argv[] )
{
int x = 1, y = 3, z = 4;
int *num;
const float pi = 3.14;
z*=y;
y = x + (int)pi;
num = &y;
z = z =1;
if( z <= y ) {
y = y-1;
cout << "Z: " << z << " <= Y+1: " << y << endl;
} else {
y = y-1;
cout << "Z: " << z << " > Y+1: " << y << endl;
}
cout << "Z: " << z << endl;
cout << "Y: " << y << endl;
cout << "The base memory address of Y: " << num << endl;
cout << "The value pointed to by num: " << *num << endl;
return 0;
}Z: 1 <= Y+1: 3
Z: 1
Y: 3
The base memory address of Y: 0xbffffa9c
The value pointed to by num: 3#include<iostream>
int main( int argc, char *argv[] ) {
int y = 3;
int *num = &y;
std::cout << "Z: 13 > Y: 3" << std::endl << "Z: 13" <<
std::endl << "Y: 3" << std::endl <<
"The base memory address of Y: " << num << std::endl <<
"The value pointed to by num: 3" << std::endl;
return 0;
}/*
* program7.cpp
*
*
* Created by [redacted] on 11/26/09.
* Copyright 2009 __MyCompanyName__. All rights reserved.
*
*/
#include <iostream>
using namespace std;
int main( int argc , char *argv[] ) {
int number ;
cout << "Enter an integer: " ;
cin >> number ;
if( number % 2 == 0 ) {
cout << number << " is even." << endl;
} else {
cout << number << " is odd." << endl;
}
return 0;
}if((x & 1) == 0) {
//even
} else {
//odd
}/*
* return.cpp
*
*
* Created by [redacted] on 12/18/09.
* Copyright 2009 __MyCompanyName__. All rights reserved.
*
*/
//Returning a value
#include <iostream.h>
mul(int x, int y); //mul's prototype
main()
{
int answer;
answer = mul(10, 11); //assign return value
cout << "The answer is " << answer;
return 0;
}
//This function returns a value
mul(int x, int y)
{
return x * y; //return product of x and y
}/*
* return.cpp
*
*
* Created by [redacted] on 12/18/09.
* Copyright 2009 __MyCompanyName__. All rights reserved.
*
*/
//Returning a value
#include <iostream>
using namespace std;
mul(int x, int y); //mul's prototype
main()
{
int answer;
answer = mul(10, 11); //assign return value
cout << "The answer is " << answer;
return 0;
}
//This function returns a value
mul(int x, int y)
{
return x * y; //return product of x and y
}return.cpp:16: error: expected constructor, destructor, or type conversion before ‘;’ token
return.cpp: In function ‘int main()’:
return.cpp:22: error: ‘mul’ was not declared in this scope
return.cpp: At global scope:
return.cpp:30: error: ISO C++ forbids declaration of ‘mul’ with no type/*
* return.cpp
*
*
* Created by [redacted] on 12/18/09.
* Copyright 2009 __MyCompanyName__. All rights reserved.
*
*/
//Returning a value
#include <iostream>
using namespace std;
int mul(int x, int y); //mul's prototype
main()
{
int answer;
answer = mul(10, 11); //assign return value
cout << "The answer is " << answer;
return 0;
}
//This function returns a value
int mul(int x, int y)
{
return x * y; //return product of x and y
}The answer is 110OK, thanks. The book does indeed say that one can explicitly declare int; that must have been made the standard since then. I'll keep that in mind as I plow ahead...
Working on blocks./*
* blocks.cpp
*
*
* Created by [redacted] on 2/9/10.
* Copyright 2010 __MyCompanyName__. All rights reserved.
*
*/
//This program demonstrates blocks of code
#include <iostream>
using namespace std;
main()
{
int a, b;
cout << "enter first number: ";
cin >> a;
cout << "enter second number: ";
cin >> b;
if(a < b) {
cout << "First number is less than second.\n";
cout << "Their difference is: " << b-a;
}
if(a > b) {
cout << "First number is greater than second.\n";
cout << "Their sum is: " << a+b;
}
if(a = b) {
cout << "First number equals second.\n";
cout << "Their product is: " << a*b;
}
return 0;
}$ ./output
enter first number: 4
enter second number: 5
First number is less than second.
Their difference is: 1First number equals second.
Their product is: 25 if(a = b) { if(a == b) {OK, big DUH moment here. I knew that.
Sometimes, it takes someone else to spot your mistakes. Thank you, both. == it is!