Syntax for lab 1

Key syntax elements for lab 1

Remember to check back on the part 1 syntax if you forget any of the details on program structure, declaring constants and variables, etc.

The C++ syntax we will add for part 2 includes:

formatted printf statements, %d, %f, %lf, and %g

// print the value of an integer variable, x, padded to be 6 spaces wide
printf("The value is %6d", x);

// print the value of a double variable, y, padded to be 5 spaces wide,
//    and with exactly two digits after the decimal point
printf("The value is %5.2lf", y);

// print the value of a float variable, z, leaving out any trailing zeros
printf("The value is %g", z);

scanf statements, %d, %f, %lf

// read an integer value into radius
scanf("%d", &radius);

// read a float value into circumference
scanf("%f", &circumference);

// read a double value into area
scanf("%lf", &area);

calling functions and using the value they return

// include the cmath library
#include <cmath>

int main()
{
   double result;

   // compute the square root of 32 and store it in result
   result = sqrt(32);

   // compute 5 raised to the power of 3 (i.e. 5*5*5) and store it
   result = pow(5, 3);
}