problem about pointer

[hiramlee]

int strcat(char *s, char *t){

while(*(s++)!='\0');
s--;
while(*(s++)=*(t++));

return 0;

}

Description Resource Path Location Type
Possible assignment in condition '*(s++)=*(t++)' strcat.c /strcat line 23 Semantic Error
Description Resource Path Location Type
suggest parentheses around assignment used as truth value [-Wparentheses] strcat.c /strcat line 23 C/C++ Problem

 

[alexan_e]

while(*(s++)=*(t++));

"=" is the assignment operator, you should use "==" for equality testing

 

[hiramlee]

ah! This function add the string t to the end of string s; so, here should be assignment operator "=", not "==".
Thanks all the way

 

[alexan_e]

In that case you can disregard the warning

Possible assignment in condition '*(s++)=*(t++)' strcat.c /strcat line 23 Semantic Error

because the compiler just tells you that it thinks you are using = instead of ==

 

[hiramlee]

many thanks