Problems in Nankai district (1)

Requirement: scan the str string from left to right, move all the characters on the left of lowercase letter o to the right of the string, and delete the lowercase letter o, scan the str string and perform the preceding operations until all lowercase letters o in str are deleted. The answer is as follows: [cpp] void StrOR (void) {int I, j, k = 0; // defines three variables. I indicates the number of rows, and j indicates the number of columns, k points to the first character int len of each row; // It is used to store the number of characters in each row. char buf [80]; // It is used to store the row data of temporary transformation. char a = 0; // when row data is stored in a temporary array, the row data is cleared with 0 characters (I = 0; I <maxline; I ++) {len = strlen (xx [I]); // obtain the number of characters in each line j = 0; while (j <len) {if (xx [I] [j] = 'O') // determines whether the character is o {xx [I] [j] = 0; // Replace the character o position with zero to make the string copy and connection take effect. When the string connection function and the copy function have zero characters, strcpy (buf, & xx [I] [j + 1]);/* strcpy function: Prototype Declaration: extern char * strcpy (char Dest [], const char * src); function: copy the string starting from the src address and containing the NULL terminator to the address space starting with dest, and copy the string ending mark together. note: The memory areas specified by src and dest cannot overlap and dest must have sufficient space to accommodate src strings. Returns the pointer to dest. */Strcat (buf, xx [I]);/* strcat function: Prototype: extern char * strcat (char * strDest, char * strSrc); function: add the strSrc string to the end of strDest (overwrite '\ 0' at the end of strDest) and add '\ 0'. Note: the memory regions specified by strSrc and strDest cannot overlap and strDest must have enough space to accommodate strSrc strings. Returns the pointer to strDest. www.2cto.com */strset (xx [I], a); // clear the data in xx [I, so that the strcpy (xx [I], buf) error will not occur when obtaining data from the temporary array ); // copy the data in the temporary array to the row array of xx len = len-j; // The Last j characters in the copied data do not contain the character o j = 0; // set j to 0 and re-operate the new data} else {j ++ ;}}}}