Replacing bits of strings

[conquerdude]

Ok...what's the VB equivalent of Replace()? I have 2 variables, mainstring and username. Let's say mainstring contains :

$user is cool!

If I wanted to make $user to what's in username I would do

mainstring = Replace(mainstring, "$user", username)

Now how would I do this in C++??

[crptcblade]

http://161.58.186.97/showthread.php?...hlight=replace

look for parksie's posts

[conquerdude]

Well i guess i shouldn't be saying string but character array. It's not a string.

[kedaman]

I am responsible for that function, I've tested it with replacing longer replace strings as well so I assumed it would work assuming there is enough target buffer.
With what input did it fail?

[conquerdude]

This is the exact bit of code I'm using:

char tmp[211];
int maxwidthofline = 210;     // put the max line len here
FILE *in;
in=fopen("responses.txt","r");
char seps[] = ":";
char *token;

char playername[80];

int didwe = 0;
int firstnum;
char *whatsaid;
char *saydis;
while (!feof(in) )
{

    fgets(tmp,maxwidthofline,in);
    strcpy(playername, STRING(pEntity->v.netname));
    replacestr(tmp, "$player", playername, tmp);
    // Establish string and get the first token:
    token = strtok( tmp, seps );
    firstnum = atoi(token);
    //DOES SOME STUFF
}
fclose(in); 

This is part of the code I'm coding for AdminOP (a TFC server side mod). The STRING(pEntity->v.netname) justs returns the player name. So anyways, what is wrong with this?

[conquerdude]

Well here's some more examples:

This works:

#include <string.h> 
#include <stdio.h> 

char* replacestr(const char* str,const char* crt,const char* rep,char*trg){
    char* temp=trg;
    for(;*str; ){
        for(const char*i=crt,*j=str;*j&&*i&&*i==*j;j++,i++);
        if (!*i){
            for(i=rep;*i;*trg++=*i++)str++;
            str=j;
        }else 
            *trg++=*str++;
    }
    *trg=0;
    return temp;

};

void main( void ) 
{
    char tmp[256] = "$user is cool\n";
    char username[80]="Me";
    replacestr(tmp, "$user", username, tmp);
    printf(tmp);
} 

This doesn't

#include <string.h> 
#include <stdio.h> 

char* replacestr(const char* str,const char* crt,const char* rep,char*trg){
    char* temp=trg;
    for(;*str; ){
        for(const char*i=crt,*j=str;*j&&*i&&*i==*j;j++,i++);
        if (!*i){
            for(i=rep;*i;*trg++=*i++)str++;
            str=j;
        }else 
            *trg++=*str++;
    }
    *trg=0;
    return temp;

};

void main( void ) 
{
    char tmp[256] = "$user is cool\n";
    char username[80]="This code";
    replacestr(tmp, "$user", username, tmp);
    printf(tmp);
}