replace a word in a line C language

[nickyeng]

i was wondering how to replace a word in a line.

i search in google.com and thescipts.com, i hardly to find what i want.

for example this line,

"I like his daughter"

replace his with "her".

first, i find the substring "him" in the line.
and then replae it with "her" at that position(string address), to let it become,

"I like her daughter"

how am i do that in C language ?
any idea?

i dont give the code here cos what i want is just the code of replacing the word baisically, that i dont know what to code.
-----------
thanks.

[willakawill]

First check out this function for finding a string in text and then lookup 'replace' in your c help

[questionit]

This might be non-professional but a working example of how this could be implemented with comments :

#include<stdio.h>
#include<string.h>
 
 
void main()
{
 
    char str[20] = "this is big house";
 
    char *wordtoDelete = "big";
    char *replaceWith= "small";
 
    char *temp= "";
 
temp = strstr(str,wordtoDelete);    // got at start of 'word to replace' word
 
//get all which is after the 'word to replce'
char *getafter = temp + strlen(wordtoDelete); 
 
int pos = temp-str;  // start of 'word to delete' position
 
//end the string before the 'word to replace word'
str[pos] = '\0';
 
char newS[50];
strcpy(newS,str);  //copy the string before the 'word to delete'
 
strcat(newS,replaceWith);       //append the word you want to replace
 
strcat(newS,getafter);       // append all which was after the 'word to delete'
puts(newS);
 
 
}

Let me know how you find it.

[Banfa]

First check out this function for finding a string in text and then lookup 'replace' in your c help

An interesting function that can not possibly work as advertised without introducing undefined behaviour. It mallocs 1 character too few for the buffer it copies to in order to compare against resulting (I guess) in a buffer over-run when it calls Left (either that or it fails to zero terminate the string.

Additionally it is woefully in efficient compared to what could be written in straight C/C++ ignoring trying to make it VB like, which should not need to copy any memory.