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Answer to Question #45238 in C++ for vinoth

Question #45238
how to enter two or more names using two dimensional array?
Expert's answer
#include <cstring>
#include <cstdio>
#include <cctype>
const int MAX_NAMES = 32;
const int MAX_NAME_LENGTH = 128;
typedef char Array2D[MAX_NAMES][MAX_NAME_LENGTH];
void input_names(Array2D& names)
{
char buffer[MAX_NAME_LENGTH];
char choice;

/* Fill the 2D array of chars with zeros.
* Zero-char indicates the end of the ANSI string */
memset(names, 0, MAX_NAMES * MAX_NAME_LENGTH);

for (int k = 0; k < MAX_NAMES; k++)
{
/* Ask the user whether he/she wants to enter another name */
printf("Do you want to input a new name? (y/n): ");
do
{
scanf("%s", buffer);

/* Validate user selection */
choice = tolower(buffer[0]);
if (strlen(buffer) == 1 && (choice == 'y' || choice == 'n'))
break;

printf("Wrong choice. Please re-enter (y/n): ");
}
while (true);

/* Stop prompting for new names if 'n' was selected */
if (choice == 'n')
{
printf("\n");
return;
}

/* Ask the user to enter a new name otherwise */
printf("Enter a new name: ");
scanf("%s", names[k]);
printf("\n");
}
printf("The maximum number of names (%d) was reached.\n", MAX_NAMES);
}
void print_names(const Array2D& names)
{
for (int k = 0; k < MAX_NAMES; k++)
{
/* Break if the current one and all succeeding strings are empty */
if (names[k][0] == '\0')
break;
printf("%s\n", names[k]);
}
}
int main()
{
Array2D names;
input_names(names);

printf("You've entered the following names:\n");
print_names(names);
return 0;
}

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