有一个字符串开头或结尾含有n个空格(“ abcdefg ”)欲去掉前后空格,返回一个新字符串
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
int getCount11(char* str, int* pCount)
{
int i, j = 0;
char* p = str;
int ncount = 0;
if (str == NULL || pCount == NULL)
{
return -1;
}
i = 0;
j = strlen(p) - 1;
while (isspace(p[i]) && p[i] != '\0')
{
i++;
}
while (isspace(p[j]) && p[j] != '\0')
{
j--;
}
ncount = j - i + 1;
*pCount = ncount;
return 0;
}
//取出字符串前后的空格
int trimSpace(char* str, char* newstr)
{
int i, j = 0;
char* p = str;
int ncount = 0;
if (str == NULL || newstr == NULL)
{
printf("程序出错\n");
return -1;
}
i = 0;
j = strlen(p) - 1;
while (isspace(p[i]) && p[i] != '\0')
{
i++;
}
while (isspace(p[j]) && p[j] != '\0')
{
j--;
}
ncount = j - i + 1;
strncpy(newstr, str + i, ncount);
newstr[ncount] = '\0';
return 0;
}
int main()
{
char* p = " abcdefg ";
char buf[1024]={0};
int num = 0;
getCount11(p, &num);
trimSpace(p,buf);
printf("%d\n", num);
printf("%s",buf);
}