C_C++_BJH_01. Capitalize the First Letter
Design a function that meets the following requirements:
l Capitalize the first letter of each word in a character string.
l If the first letter is capitalized or the first character is not a letter, leave the first character unchanged.
- Function to be implemented:
void vConvert2Upper(char *pInputStr, long lInputLen, char *pOutputStr);
[Input] pInputStr: pointing to a character string
lInputLen: length of the character string
pOutputStr: pointing to a (lInputLen+1)–sized memory for output
[Output] None
[Note] Implement only the function algorithm, and do not perform any input or output.
Input: this is a Dog.
Output: This Is A Dog.
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| #include <iostream>
#include <string.h>
#include <ctype.h>
using namespace std;
void vConvert2Upper(char *pInputStr, long lInputLen, char *pOutputStr)
{
if ((pInputStr == NULL) || (lInputLen <= 0) || (pOutputStr == NULL))
{
return;
}
for (int i = 0; i < lInputLen; i++)
{
if ((i == 0) || (*pInputStr == ' '))
{
if (*pInputStr == ' ')
{
*pOutputStr = *pInputStr;
pInputStr++;
pOutputStr++;
}
if (islower(*pInputStr))
{
*pOutputStr = *pInputStr + 'A' - 'a';
}
else
{
*pOutputStr = *pInputStr;
}
}
else
{
*pOutputStr = *pInputStr;
}
pInputStr++;
pOutputStr++;
}
*pOutputStr = ' ';
}
int main() {
char *pInputStr = "this is a Dog.";
char pOutputStr[20];
vConvert2Upper(pInputStr, strlen(pInputStr), pOutputStr);
cout << pOutputStr;
return 0;
}
|