C - Array of Strings
A string is a 1D array of characters, so an array of strings is a 2D array of characters. Just like we create a 2D array of int, float etc, we can also create a 2D array of character.
Syntax for declaring a 2-D array of characters:
char prg[3][12] = {
{'c', 'o', 'd', 'i', 'n', 'g', '\0'},
{'l', 'e', 'a', 'r', 'n', 'i', 'n', 'g', '\0'},
{'p', 'r', 'o', 'g', 'r', 'a', 'm', 'm', 'i', 'n', 'g', '\0'}
};
This above initialization is equivalent to:
char prg[3][12] = {
"coding",
"learning",
"programming"
};
Exercise - Array of Strings
Q1: Input 10 names and print them.
#include<stdio.h>
void main()
{
char name[10][20];
int i;
printf("Enter 10 names: ");
for(i=0;i<=9;i++)
{
gets(name[i]);
}
printf("Input Names are:\n");
for(i=0;i<=9;i++)
{
puts(name[i]);
}
}
Q2: Input 10 names and find largest name (take ASCII value for comparing).
Q3: Input 10 names and find smallest name (take ASCII value for comparing).
Q4: Input 10 names and sort them in ascending order.
#include <stdio.h>
#include <string.h>
void main()
{
char name[10][20], t[20];
int i, j;
printf("Enter 10 names");
for(i=0;i<=9;i++)
{
gets(name[i]);
}
for(i=0;i<=8;i++)
{
for(j=0;j<=8-i;j++)
{
if(strcmp(name[j], name[j+1]) < 0)
{
strcpy(t,name[j]);
strcpy(name[j], name[j+1]);
strcpy(name[j+1], t);
}
}
}
printf("10 names are: ");
for(i=0;i<=9;i++)
{
puts(name[i]);
}
}
Q5: Input 10 names and sort them in descending order.
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