String is a collection of more than one character in C Language.

In C string is not allowed as a data type,so, we have to use character array.

Declaration string syntax:

charstr_name[size];

Example:

char s1[20];

Input string function:

gets(s1);

To output string function:

puts(s1);

Operations done on the string:

1. Find out the length of string

strlen(s1)

2. Copy one string to another string

strcpy(s2,s1)

Here , one s1 string copied to s2  string.

3. Concate(merge) two string

strcat(s1,s2)

Here , s1 string show concated string (s1+s2). S2 is not changed.

4. Compare two string

strcmp(s1,s2)

if(strcmp(s1,s2)==0)

{           printf(“both are same”)  }

else

{           printf(“both are not same”)  }

For more information about String in C Language.

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