删除字符串空格

字符串常量不可更改

 

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#include <iostream> #include <cstdlib> #include <cstring> using namespace std;   void deleteStr(char * str) {      int nSpaceNum = 0;    char *p = str;    char *q = str;    char *s = str;    while(*s != '\0')    {        if(*s == ' ')        {            nSpaceNum++;            q++;        }        else        {           *p = *q;           *q = ' ';           p++;           q++;        }        s++;    }    cout<<"nSpaceNum=="<<nSpaceNum<<endl;    cout<<"str=="<<str<<endl; } int main() {    char* str = " hell o w orl d";    char *dest = (char*)malloc(sizeof(char)*strlen(str));    char *d = dest;    while(*str != '\0')     *d++ = *str++;      deleteStr(dest);        return 0; }