Question

How to extract the first letter from each word in a string with C++

Answer 1

#include <iostream>

using namespace std;

void get_first_letters(char *s, char *fl);

int main()
{
	char s[] = "c++ programming language";
	char fl[10] = "";

	get_first_letters(s, fl);

	cout << fl << endl;

	return 0;
}
void get_first_letters(char *s, char *fl)
{
	if (s == NULL) return;

	int len = strlen(s);

	if (s[0] != ' ' && s[0] != '\0') fl[0] = s[0];

	for (int i = 1, j = 1; i < len; i++)
	{
		if (s[i] == ' ')
			fl[j++] = s[i + 1];
	}
}


/*
run:

cpl

*/

 

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Answer 2

#include <iostream>

using namespace std;

void get_first_letters(char *s, char *fl);

int main()
{
	char s[] = "c++ programming language";
	char fl[10] = "";

	get_first_letters(s, fl);

	cout << fl << endl;

	return 0;
}
void get_first_letters(char *s, char *fl)
{
	if (s == NULL) return;

	int len = strlen(s);

	if (s[0] != ' ' && s[0] != '\0') fl[0] = s[0];

	for (int i = 1, j = 1; i < len; i++)
	{
		if (s[i] == ' ')
		{
			if (i + 1 < len && s[i + 1] != ' ')
				fl[j++] = s[i + 1];
		}
	}
}


/*
run:

cpl

*/

 

70+ SQL courses for beginners and professionals