How to Write Standard Code in C++

Following Examples

1. Take a look at Example 1:

   /* This Is A Simple Program Just To Understand The Basic OF g++ Style. This Is A Program With g++ Compiler.*/ #include  /* include input and output functions */ using namespace std; /* we are using the std (standard) functions */ int main() /* declare the main function; you can have int main(void) too. */ { cout << "n Hello Daddy" ; /* 'n' is a newline (t is a tab) */ cout << "n Hello Mummy" ; cout << "n This Is My First Program" ; cout << "n Date 11/03/2007" ; return 0; } 

2. Consider this Example 2:

   /* This Program Calculates The Sum Of Two Numbers */ #include using namespace std; int main() { float num1,num2,res; /* declare variables; int, double, long.. work too */ cout << "n Enter the first number= " ; cin >> num1; /* put user's value into num1 */ cout << "n Enter the second number= " ; cin >> num2; res = num1 + num2; cout << "n The sum of "<< num1 <<" and "<< num2 <<" = "<<res 'n' ; return 0; } 

3. Learn from Example 3:

   /* Product Of Two Numbers */ #include using namespace std; int main() { float num1; int num2; double res; cout << "n Enter the first number= " ; cin >> num1; cout << "n Enter the second number= " ; cin >> num2; res = num1 * num2; cout << "n The Product of two numbers = " << res 'n' ; return 0; } 

4. Take a look at Example 4:

   // Looping to find a math equation. In this case, it figures out the answer to // Question #1 on Project Euler. #include using namespace std; int main() { // Opening Main. int sum1=0; int sum2=0; int sum3=0; int sum4=0; // Creates the integers needed in order to figure out the answer. for (int a=0; a < 1000; a=a+3) {sum1 = sum1+a;} // Loops until a is 1000 or over, adding 3 to a every loop. Also adds a to sum1. for (int b=0; b < 1000; b=b+5) {sum2 = sum2+b;} // Loops until b is 1000 or over, adding 5 to b every loop. Also adds b to sum2. for (int c=0; c < 1000; c=c+15) {sum3 = sum3+c;} // Loops until c is 1000 or over, adding 15 to c every loop. Also adds c to sum3. sum4 = sum1 + sum2 - sum3; // sum4 takes the sum of sum1 and sum2, and subtracts sum3. cout << sum4; // Outputs sum4, the answer. cin.get(); // Waits for user to press enter. return 0; // Return statement. } // Closing Main. 

5. Take a look at this example of different styles:

   int main(){ int i = 0; if(1+1==2){ i = 2; } } /* This is Whitesmiths style */ int main() { int i; if (1+1==2) { i = 2; } } /* This is GNU style */ int main () { int i; if (condition) { i = 2; function (); } }