/* This is a comment. The slash-asterisk begins the comment. The asterisk-slash ends the comment. This type of comment can span many lines. */ // This is an alternate comment style. // The slash-slash comments out everything after it. // It only affects one line. // these statements link files // that contain useful subroutines // use <> for files in the aSystem folder // use "" for files in the aUser folder #include <aCore.tea> // for aCore_Sleep #include <aPrint.tea> // for print statements // defining some constants #define FIVE 5 #define ONESEC 10000 /* example of function uses a switch statement returns 10 raised to 0,1,2,3,4 any other input value will return 1 */ int myFunc(char a) { int power; switch(a) { case 0: power=1; break; case 1: power=10; break; case 2: power=100; break; case 3: power=1000; break; case 4: power=10000; break; default: power=1; break; } return power; } // example of a subroutine with several input parameters void mySub(int a, int b, int c) { int k; k=a+b+c; aPrint_String("k="); aPrint_IntDec(k); aPrint_Char('\n'); } void main() { // variable declarations come first in // any routine, subroutine, or function // it is good practice to include initializers char c=0; int i=0; int j=0; // example for printing text // backslash-n is carriage return aPrint_String("Hello world.\n"); // sleep routine is in 0.1ms units // parameter of 10000 will cause delay of 1 second aCore_Sleep(ONESEC); // example of subroutine call j=10; mySub(30,i,j); aCore_Sleep(ONESEC); // example of for loop and printing a variable // BASIC equivalent: for i=0 to 2 step 1 // the loop starts at 0 and counts while i<3 // the ++ is an increment operator for (i=0; i<3; i++) { aPrint_IntDec(i); aPrint_Char('\n'); } aCore_Sleep(ONESEC); // example of while loop and printing a variable j=3; while (j>0) { j=j-1; aPrint_IntDec(j); aPrint_Char('\n'); } aCore_Sleep(ONESEC); // example of do-while loop // do-while guarantees at least one iteration c=0; do { i=myFunc(c); aPrint_IntDec(i); aPrint_Char('\n'); c++; } while (c<FIVE); aCore_Sleep(ONESEC); // example of break statement // forces a loop to exit for (i=0; i<10; i++) { if (i>4) break; aPrint_IntDec(i); aPrint_Char('\n'); } aCore_Sleep(ONESEC); // example of if j=0; if (j==0) { aPrint_String("j equals 0\n"); j=3; } aCore_Sleep(ONESEC); // example of if-else if (j!=3) { aPrint_String("j does not equal 3\n"); } else { aPrint_String("j equals 3\n"); j=1; } aCore_Sleep(ONESEC); // loops and if statements can be nested if (j>0) { aPrint_String("j greater than 0\n"); if (j!=3) { aPrint_String("j not equal to 3\n"); for (j=0; j<5; j++) { i=0; while (i<=j) { aPrint_IntDec(i); aPrint_Char(','); aPrint_IntDec(j); aPrint_Char('\n'); aCore_Sleep(ONESEC); i=i+1; } } } } // integer math j=0; // assignment, j will be 0 j=j+9; // addition, j will be 9 j=j-8; // subtraction, j will be 1 j=j*16; // multiplication, j will be 16 j=j/3; // integer division, j will be 5 j=j|27; // bitwise OR, j will be 31 j=j&7; // bitwise AND, j will be 7 j=j^1; // bitwise XOR, j will be 6 j=j%5; // modulo (remainder) operation, j will be 1 aPrint_IntDec(j); aPrint_Char('\n'); aCore_Sleep(ONESEC); }