Arrays of Strings

Arrays of Strings 

Ragged arrays are very common with strings. Consider, for example, the need to store the days of the week in their textual format. We could create a two-dimensional array of seven days by ten characters, but this wastes space.

Operations on Individual Members 

#include <stdio.h> 

#include <conio.h> 

#include <string.h> 

int main (void) 

{ 

char str1 [501, str2[50], str3[50]; //Declaring strings 

int len1 = 0, len2 = 0, i = 0, i1= 0; 

// Calculate and print the length of the string 

printf ("Please Enter String 1: "); 

scanf("%s", str1); 

while (str1 [len 1 ] != ‘\0') 

len1 = len1+1; 

printf("The length of the string calculated is: %d\n", len1); 

printf("Using strlen:\n"); 

printf("The length of the string: %d\n", strlen(str1) ); // This should match with the computed one 

// Compare two strings and print result Equal or Not Equal 

printf ("Please enter string 2: "); 

scanf ("%s", str2); 

len2 = strlen(str2); 

if (len1 = len2) 

while (str1 [i] = str2[i]) i = i-1-, // If there is a mismatch come out of loop 

if (len1!= len2 Ii i < len1) 

/* Either strings have unequal lengths or there was a mismatch at some position*/ 

printf ("Strings are Not Equal"); 

else 

printf (" \nStrings are Equal"); 

printf (" \nUsing strcmp:"); 

printf (strcmp(strl,str2) ?"\n Strings are Not Equal": "\n Strings are Equal");  /* strcmp compares two strings and returns zero if they are the same */

// Copy string 1 to string 3 

i = 0; 

while (strl [i] != '\0') //Copy strl to str3, one character at a time 

{ 

str3[i] = str1 [i]; 

i++, 

} 

str3 [i] = ‘\0’; 

printf (" \nstr1 copied to str3:\n"); 

printf ("str1 = %s and str3 = %s \n", str1, str3); 

printf("concatenating strings"); 

i = strlen(str1); 

while (str2[il] != '\0') // concatenate second string to firs one, one character at a time 

{ 

str1 [i] = str2[i]I; 

i1 = i1++; 

i = i++, 

} 

str1[i]= 0; 

printf(" \n%s and the length is %d\n", str1, i); 

printf("Using strcat:\n%s", strcat(str3, stx2 ));  /* strcat cocatenates the second string i.e. str2 to the end of the first string i.e. str3 */

printf(" and the length is %d\n", strlen(str3)); 

return 0; 

} 

Output: 

Please Enter String 1: globarena 

The length of the string calculated is: 9 

Using strlen: 

The length of the string: 9 

Please enter string 2: Hyderabad 

Strings are Not Equal Using strcmp: 

Strings are Not Equal 

strl copied to str3: 

strl = globarena and str3 = globarena 

concatenating strings 

globarenaHyderabad and the length is 18 

Using strcat: 

globarenaHyderabad and the length is 18