Code:#include "iostream" #include "string" using namespace std; void search_and_replace(char *text, char *search, char *replace); int main() { char text[256] = "You can find and replace any part of this line using this program."; char originalText[256]; cout << "Your text is " << endl; cout << text << endl << endl; strcpy(originalText, text); cout << "search_and_replace(text, \"find\", \"search\")" << endl; search_and_replace(text, "find", "search"); cout << text << endl << endl; strcpy(text, originalText); cout << "search_and_replace(text, \"and\", \"&\")" << endl; search_and_replace(text, "and", "&"); cout << text << endl << endl; // ... strcpy(text, originalText); cout << "search_and_replace(text, \"this line\", \"a sentence\")" << endl; search_and_replace(text, "this line", "a sentence"); cout << text << endl << endl; strcpy(text, originalText); cout << "search_and_replace(text, \"this\", \"the\")" << endl; search_and_replace(text, "this", "the"); cout << text << endl << endl; return 0; } void search_and_replace(char *text, char *search, char *replace) { char *pStart; char *pTemp; char *pOriginal; pOriginal = text; if ( (pStart = strstr(text, search)) == NULL ) { cout << "No search string found." << endl; return; } pTemp = new char[(pStart-text)+strlen(replace)+(strlen(text)-strlen(search))+1]; strncpy(pTemp, text, (pStart-text)); pTemp[pStart-text] = '\0'; strcat(pTemp, replace); text += (pStart-text)+strlen(search); strcat(pTemp, text); text = pOriginal; strcpy(text, pTemp); delete pTemp; }