Initial commit

.gitignore

@@ -0,0 +1,7 @@
+binary
+CMakeCache.txt
+CMakeFiles
+cmake_install.cmake
+Makefile
+*.png
+*.swp

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.0)
+
+project(programmingquest LANGUAGES C)
+
+SET(CHALLANGE namegen)
+
+add_executable(binary
+	src/${CHALLANGE}.c
+)

src/fizzbuzz.c

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+#include <stdio.h>
+#define LIM 100
+
+int main(void) {
+	for (int i=1; i<LIM; i++) {
+		int f=!(i%3),b=!(i%5);
+		if (f || b) {
+			if (f) {
+				printf("Fizz");
+				if (b) {printf(" ");}
+			}
+			if (b) {
+				printf("Buzz");
+			}
+		} else {
+			printf("%i", i);
+		}
+		if (i<LIM-1) {
+			printf(", ");
+		}
+	}
+	printf("\n");
+	return 0;
+}

src/namegen.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#define NICKLIM 36
+
+int main(int argc, char argv[]) {
+	srandom(time(NULL));
+	char name[NICKLIM+1];
+	if (argc==1) {
+		fprintf(stderr,"Please enter your occupied nickname: \n");
+		char c;
+		int pos=0;
+		while ((c=getchar())!='\n' && pos<NICKLIM+1) {
+			name[pos++] = c;
+		}
+		name[pos] = '\0';
+	} else {
+		fprintf(stderr,"You have to send your username via standard input.\n");
+		return 2;
+	}
+	if (name[0]=='\0') {
+		fprintf(stderr,"No name given, generating one...\n");
+		int c, len;
+		for (c=0, len=15; c<len; c++) {
+			unsigned int uppercase=random()%2;
+			char start = 'a';
+			if (uppercase) {
+				start = 'A';
+			}
+			name[c] = start + (random()%26);
+		}
+		name[++c] = '\0';
+	}
+	for (int c=0; c<NICKLIM+1 && name[c]!='\0'; c++) {
+		if (random()%2) {
+			switch (name[c]) {
+				case 'o': case 'O': name[c] = '0'; break;
+				case 'i': case 'I':
+				case 'l': case 'L': name[c] = '1'; break;
+				case 'z': case 'Z': name[c] = '2'; break;
+				case 'e': case 'E': name[c] = '3'; break;
+				case 'a': case 'A': name[c] = '4'; break;
+				case 's': case 'S': name[c] = '5'; break;
+				case 'g': case 'G': name[c] = '6'; break;
+				case 't': case 'T': name[c] = '7'; break;
+				case 'b': case 'B': name[c] = '8'; break;
+			}
+		}
+	}
+	fprintf(stderr, "Randomly generated name: ");
+	printf("%s\n", name);
+	return 0;
+}

src/passwordgen.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+int main(int argc, char *argv[]) {
+	srandom(time(NULL));
+	if (argc > 1) {
+		char generated[atoi(argv[1])+1];
+		int i;
+		for (i=0; i<=atoi(argv[1]); i++) {
+			char start = 'a';
+			if (random()%2) {
+				start = 'A';
+			}
+			generated[i] = start + random()%26;
+		}
+		generated[i] = '\0';
+		printf("%s\n", generated);
+	} else {
+		fprintf(stderr, "Too few arguments.\n");
+		return 1;
+	}
+	return 0;
+}

src/ringbuffer.c

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+#include <stdio.h>
+#define BUFSIZE 64
+
+int main(void) {
+	char buffer[BUFSIZE] = {'\0'}, c;
+	int i=0;
+	while ((c=getchar())!=EOF) {
+		buffer[i++]=c;
+		if (i==BUFSIZE-1)
+			i=0;
+		printf("Buffer is now: %s\r", buffer);
+	}
+	printf("\n");
+	return 0;
+}