摘要：//// main.c// bitcounts//// Created by Cheney Shen on 11-4-16.// Copyright 2011年 __MyCompanyName__. All rights reserved.//#include <stdio.h>static int bitcounts[] = {0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};int bitcount(unsigned int u) { int n = 0; for(; u != 0; u >>= 4) n += bitc 阅读全文

摘要：//// main.c// baseconv//// Created by Cheney Shen on 11-4-16.// Copyright 2011年 __MyCompanyName__. All rights reserved.//#include <stdio.h>#include <limits.h>#include <string.h>char* baseconv(unsigned long long, int);int main (int argc, const char * argv[]){ printf("the result 阅读全文

摘要：//// main.c// bitarray//// Created by Cheney Shen on 11-4-16.// Copyright 2011年 __MyCompanyName__. All rights reserved.//#include <stdio.h>#include <limits.h>#include <string.h>#include <time.h>#define BITMASK(b) (1 << ((b) % CHAR_BIT))#define BITSLOT(b) ((b) / CHAR_BIT 阅读全文

摘要：#include <stdio.h>#include <string.h>#include <errno.h>int main (int argc, const char * argv[]) { int argi; int aflag = 0; char *bval = NULL; for (argi = 1; argi < argc && argv[argi][0] == '-'; argi++) { char *p; for (p = (char *)&argv[argi][1]; *p != '\0 阅读全文

摘要：1 #include <stdio.h> 2 #include <stdlib.h> 3 extern char *agetline(FILE *); 4 FILE *ifp; 5 6 /* assume ifp is open on input file */ 7 8 char** lines = NULL; 9 size_t nalloc = 0;10 size_t nlines = 0;11 char *p;12 13 while((p = agetline(ifp)) != NULL) {14 if (nlines >= nalloc) {15 nallo 阅读全文

摘要：1 #include <stdio.h> 2 #include <sys/types.h> 3 #include <dirent.h> 4 5 int main() 6 { 7 struct dirent *dp; 8 DIR *dfd = opendir("."); 9 if (dfd != NULL) {10 while((dp = readdir(dfd)) != NULL)11 printf("%s\n", dp->d_name);12 closedir(dfd);13 }14 getchar();15 阅读全文

摘要：1 #include <stdio.h> 2 #include <stdlib.h> 3 4 int main() 5 { 6 int i, lotsa = 100000; 7 printf("working:"); 8 for (i = 0; i < lotsa; i++) { 9 printf("%c\b", "|/-\\"[i%4]);10 fflush(stdout);11 }12 printf("\ndone.\n");13 return 0;14 } 阅读全文

摘要：1 #include <stdio.h> 2 #include <stdlib.h> 3 4 int main() 5 { 6 int i, lotsa = 100000; 7 for (i = 0; i < lotsa; i++) { 8 printf("\r%3d%%", (int )(100L * i / lotsa)); 9 fflush(stdout);10 }11 printf("\ndone.\n");12 return 0;13 } 阅读全文

摘要：char * __cdecl strtok (char * string,const char * control){ unsigned char *str; const unsigned char *ctrl = control; unsigned char map[32]; int count; #ifdef _MT _ptiddata ptd = _getptd(); #else /* _MT */ static char *nextoken; #endif /* _MT */ /* Clear control map */ for (count = 0; count < 32; 阅读全文