99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
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#include <stdio.h>
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#include <unistd.h>
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// #define p1
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/* Bitmasks for different tree/decoration patterns
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* use make <p1/p2/p3> to compile with different tree patterns
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* default is p1
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*/
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#ifdef p1
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#define pattern 0x942 // 100100100100
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#endif
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#ifdef p5
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#define pattern 0xC2C2
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#endif
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#ifdef p2
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#define pattern 0x1
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#endif
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#ifdef p3
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#define pattern 0
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#endif
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#ifdef p4
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#define pattern 0x333
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#endif
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void treeColor1() {
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printf("\033[1;93;42m");
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} // change terminal output color to green background, yellow text
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void white() { printf("\033[0m"); } // change terminhl color to system default
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void treeColor2() {
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printf("\033[1;91;102m");
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} // change terminal output color to redtext green background
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void truncColor() {
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printf("\033[31;43m");
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} // change terminal output color to red(31)tesx and
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void cls() { printf("\033[2J"); }
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// print christmas tree with height n
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void printTree(int n) {
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for (int m = 0; 1; m++) {
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// print leafy part of tree
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for (int i = 0; i < n; i++) {
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for (int j = 0; j < n - i; j++) {
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printf(" "); // offset from left edge
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}
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for (int j = 0; j < (i * 2) + 1; j++) {
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if (j & pattern) { // print tree pattern based on bitmask
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(!(m & 1)) ? treeColor2() : treeColor1();
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printf("%s", (!(m & 1)) ? "O" : "*");
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white();
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} else {
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((m & 1)) ? treeColor2() : treeColor1();
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printf("%s", (!(m & 1)) ? "*" : "O");
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white();
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}
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}
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printf("\n");
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}
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// print trunk with length and thickness based on tree size
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for (int i = 0; i < (n / 6) || i < 1; i++) {
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for (int j = 0; j < n - 2; j++) {
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printf(" ");
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}
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truncColor();
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printf("%s", (n < 8) ? "\033[0m \033[31;43m|#|"
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: (n > 16) ? "|####|"
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: "|###|");
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white();
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printf("\n");
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}
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sleep(1);
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cls();
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}
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}
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void useage(char *progName) {
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printf("Useage:\n%s <tree_depth>\n <tree_depth> has to be greater than 3\n",
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progName);
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}
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int main(int argc, char **argv) {
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if (argc < 2) {
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useage(argv[0]);
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return 1;
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}
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// init treeDepth with invalid value as n would be undefined if sscanf fails
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// this could cause crash if n is ised later
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int treeDepth = -1;
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int r = sscanf(argv[1], "%d", &treeDepth); // sscanf returns # charsscanned
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if (r > 0 && treeDepth > 3) { // valid integer was scanned
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printTree(treeDepth);
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} else { // no valid integer detected display help message and quit
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useage(argv[0]);
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return 1;
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}
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return 0;
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}
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