标签:include 字节 ++ char length num 字符串 指针 string
1.
#define CHAR_SIZE 100 #define NUL '\0' int main(void){ char string[CHAR_SIZE]; fgets(string, sizeof(string)/sizeof(string[0]), stdin); double string_length; int char_num[7] = {0}; string_length = strlen(string); char *p = string; while (*p != NUL) { if (iscntrl(*p)) { char_num[0]++; } if (isspace(*p)){ char_num[1]++; } if (isdigit(*p)){ char_num[2]++; } if (islower(*p)){ char_num[3]++; } if (isupper(*p)){ char_num[4]++; } if (ispunct(*p)){ char_num[5]++; } if (!isprint(*p)){ char_num[6]++; } p++; } printf("string_length = %.0f\n", string_length); printf("cntrl = %d, space = %d, digit = %d, lower = %d, upper = %d, punct = %d no_print = %d\n", char_num[0], char_num[1], char_num[2], char_num[3], char_num[4], char_num[5], char_num[6]); return EXIT_SUCCESS; }
2.
#include <stdio.h> #include <stdlib.h> #include <string.h> #include <limits.h> #include <stdarg.h> #include <ctype.h> #include "t_c.h" #define CHAR_SIZE 100 #define NUL '\0' size_t my_strlen(char *p, int length){ size_t r_length; for (r_length = 0 ; r_length < length; r_length++) { if (p[r_length] == NUL) { break; } } return r_length; } int main(void){ char string[CHAR_SIZE] = "123456"; printf("%lu\n", my_strlen(string, 10)); return EXIT_SUCCESS; }
3.
标签:include,字节,++,char,length,num,字符串,指针,string 来源: https://www.cnblogs.com/sidianok/p/16496929.html
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