We use the header file #include <string.h> for strings.

Strlen()

length = strlen(ptr);
    where length is an integer &
    ptr is a pointer to char

Strcpy()

strcpy(ptr1, ptr2); string copy
    where ptr1 and ptr2 are pointers to char

Strcat()

strcat(ptr1, ptr2); used to concatenate

k= strcmp(ptr1, ptr2); used for string comparison
    where k is an integer

Sample String Programs

Count Number of Vowels, Characters and words in a paragraph

Use of Strlen( ) function

Use of Strcat( ) function

Use of Strcpy( ) function

Use of Strcmp( ) function

Use of Strrev( ) function

C program to sort a list of names

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