So I wrote this code:
Code: #include <stdio.h>
char *init_str(char*s)
{
int i;
char init;
for(i=0; s[i]!='\0' ; i++)
s[i]=init;
return s;
}
main()
{
char *s="bla bla bla";
printf("%s\n",init_str(s));
}
It doesn't work. The compiler doesn't detect anything, but the console crashes when I run it.
Can anyone tell me what the problem is? The init_str function in this program is supposed to initialize all values of the string to a random character.
Your string is immutable if you declare it like that, meaning you cant modify it. Instead declare it like:
char s[]="bla bla bla";
And your program should work.
Also note that depending on your compiler/crt the value of 'init' could be a null terminator so you might not get any result when printing it. You could try manually initialising init to a random character if need be.
To be a bit more precise, string literals have type const char*, so you're (wrongly) implicitly casting to char* in main. If your compiler isn't complaining about that, it's either terrible or you need to turn on more warnings.
tr1p1ea wrote:
Your string is immutable if you declare it like that, meaning you cant modify it. Instead declare it like:
char s[]="bla bla bla";
And your program should work.
Also note that depending on your compiler/crt the value of 'init' could be a null terminator so you might not get any result when printing it. You could try manually initialising init to a random character if need be.
It worked, thanks!
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