--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/c/regexParser/Makefile	Thu Jun 04 18:04:42 2015 +0900
@@ -0,0 +1,10 @@
+TARGET= regexParser
+OPTION= -Wall -O0 -g
+
+$(TARGET):main.cc
+	clang $(OPTION) -o $(TARGET) main.cc
+
+clean:
+	rm -f $(TARGET)
+	rm -r $(TARGET).dSYM
+	rm -f *~ \#*

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/c/regexParser/main.cc	Thu Jun 04 18:04:42 2015 +0900
@@ -0,0 +1,59 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int bitBlock = sizeof(unsigned long) * 8;
+
+typedef struct bitInfo {
+    int arrayNum;
+    unsigned long *bitContainer;
+}BitInfo,*BitInfoPtr;
+
+void bitSet(BitInfoPtr bi, int bitSetPosition) {
+
+    unsigned long tmp = 1;
+    int arrayPosition = 0;
+
+    arrayPosition = bitSetPosition / bitBlock;
+    bitSetPosition = bitSetPosition % bitBlock;
+
+    tmp = tmp << (bitBlock - 1 - bitSetPosition);
+    bi->bitContainer[arrayPosition] = bi->bitContainer[arrayPosition] | tmp;
+}
+
+void bitPrint(BitInfoPtr bi) {
+    for (int i = 0; i < bi->arrayNum ; i++) {
+        for (int j = bitBlock - 1; j >= 0; j--) {
+            printf( "%lu", ( bi->bitContainer[i] >> j ) & 1 );
+        }
+        printf(" ");
+    }
+    puts("");
+}
+
+int main(int argc, char **argv) {
+
+    BitInfoPtr bi = (BitInfoPtr)malloc(sizeof(BitInfo));
+    int bitSetPosition = 0;
+
+    for (int i = 1; i < argc ; i++) {
+        if (strcmp(argv[i],"-n") == 0) {
+            bitSetPosition = atoi(argv[i+1]);
+        }
+    }
+
+    bi->arrayNum = (bitSetPosition + 1) / bitBlock;
+    if (((bitSetPosition + 1) % bitBlock) != 0) bi->arrayNum++;
+
+    printf("Array Num : %d\n",bi->arrayNum);
+
+    unsigned long bitContainer[bi->arrayNum];
+    for (int i = 0; i < bi->arrayNum; i++) {
+        bitContainer[i] = 0;
+    }
+
+    bi->bitContainer = bitContainer;
+    bitSet(bi,bitSetPosition);
+    bitPrint(bi);
+    return 0;
+}