两头堵模型
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#include "stdlib.h"
#include "stdio.h"
#include "string.h"
//去掉空格后的字符串长度
void main41()
{
char *p = " abcd ";
int ncount = 0;
int i, j;
i = 0;
j = strlen(p) -1;
while (isspace(p[i]) && p[i] != '\0')
{
i++;
}
while (isspace(p[j]) && j>0 )
{
j--;
}
ncount = j - i + 1;
printf("ncount:%d \n", ncount);
system("pause");
}
//求去掉空格以后的有效长度长度
int trimSpaceStr01(char *p, int *mycount)
{
int ret = 0;
int ncount = 0;
int i, j;
i = 0;
j = strlen(p) -1;
while (isspace(p[i]) && p[i] != '\0')
{
i++;
}
while (isspace(p[j]) && j>0 )
{
j--;
}
ncount = j - i + 1;
*mycount = ncount;
return ret;
}
//求去掉空格
//int trimSpaceStr2(char *p, unsigned char *buf2, int *buf2len)
int trimSpaceStr2( char *p, char *buf2)
{
int ret = 0;
int ncount = 0;
int i, j;
i = 0;
j = strlen(p) -1;
while (isspace(p[i]) && p[i] != '\0')
{
i++;
}
while (isspace(p[j]) && j>0 )
{
j--;
}
ncount = j - i + 1;
//
strncpy(buf2, p+i, ncount);
buf2[ncount] = '\0';
return ret;
}
//求去掉空格
//int trimSpaceStr2(char *p, unsigned char *buf2, int *buf2len)
//不要轻易去改变指针输入特性中in内存块的内存。。。。
int trimSpaceStr2_notgood( char *p)
{
int ret = 0;
int ncount = 0;
int i, j;
i = 0;
j = strlen(p) -1;
while (isspace(p[i]) && p[i] != '\0')
{
i++;
}
while (isspace(p[j]) && j>0 )
{
j--;
}
ncount = j - i + 1;
//
strncpy(p, p+i, ncount);
p[ncount] = '\0';
return ret;
}
void main()
{
char buf[] = " abcd ";
char buf2[1024] = {0};
//memset(buf2, 0, sizeof(buf2));
{
char buf3[] = " abcd ";
trimSpaceStr2_notgood(buf3);
}
{
char *p = " abcd ";
trimSpaceStr2_notgood(p);
}
//printf("buf2:%s \n", buf2);
}
#include "stdio.h"
#include "string.h"
//去掉空格后的字符串长度
void main41()
{
char *p = " abcd ";
int ncount = 0;
int i, j;
i = 0;
j = strlen(p) -1;
while (isspace(p[i]) && p[i] != '\0')
{
i++;
}
while (isspace(p[j]) && j>0 )
{
j--;
}
ncount = j - i + 1;
printf("ncount:%d \n", ncount);
system("pause");
}
//求去掉空格以后的有效长度长度
int trimSpaceStr01(char *p, int *mycount)
{
int ret = 0;
int ncount = 0;
int i, j;
i = 0;
j = strlen(p) -1;
while (isspace(p[i]) && p[i] != '\0')
{
i++;
}
while (isspace(p[j]) && j>0 )
{
j--;
}
ncount = j - i + 1;
*mycount = ncount;
return ret;
}
//求去掉空格
//int trimSpaceStr2(char *p, unsigned char *buf2, int *buf2len)
int trimSpaceStr2( char *p, char *buf2)
{
int ret = 0;
int ncount = 0;
int i, j;
i = 0;
j = strlen(p) -1;
while (isspace(p[i]) && p[i] != '\0')
{
i++;
}
while (isspace(p[j]) && j>0 )
{
j--;
}
ncount = j - i + 1;
//
strncpy(buf2, p+i, ncount);
buf2[ncount] = '\0';
return ret;
}
//求去掉空格
//int trimSpaceStr2(char *p, unsigned char *buf2, int *buf2len)
//不要轻易去改变指针输入特性中in内存块的内存。。。。
int trimSpaceStr2_notgood( char *p)
{
int ret = 0;
int ncount = 0;
int i, j;
i = 0;
j = strlen(p) -1;
while (isspace(p[i]) && p[i] != '\0')
{
i++;
}
while (isspace(p[j]) && j>0 )
{
j--;
}
ncount = j - i + 1;
//
strncpy(p, p+i, ncount);
p[ncount] = '\0';
return ret;
}
void main()
{
char buf[] = " abcd ";
char buf2[1024] = {0};
//memset(buf2, 0, sizeof(buf2));
{
char buf3[] = " abcd ";
trimSpaceStr2_notgood(buf3);
}
{
char *p = " abcd ";
trimSpaceStr2_notgood(p);
}
//printf("buf2:%s \n", buf2);
}
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