c语言中有关字符串转置的问题

#include

int main()
{
void reverse(char *s);
char *s = "abcdefg";
reverse(s);

return 0;

}

void reverse(char *s)
{

char *end = s;
char temp;
    while(*end){
        end++;
    }
end--;
while(s < end)
{

        temp = *s;

        *s++ = *end;

        *end-- = temp;
}

}

char *s = "abcdefg";
指向常量，不能这么写

修改了下你的程序

 #include <stdio.h>
void reverse(char *s);
int main()
 {
char source[] = "abcdefg";
 char *s = new char[100];
strcpy(s, &source[0]);
 reverse(s);
printf("%s", s);
return 0;


}

void reverse(char *s)
 {
char *end = s;
char temp;
    while(*end){
        end++;
    }
end--;
while(s < end)
{

        temp = *s;

        *s++ = *end;

        *end-- = temp;
}


}

运行结果
gfedcba

http://codepad.org/OFfraJb7

告诉你了，那是常量。你在reverse中还在试图修改它的值。