strncmp() - String Manipulation Function
How to compare characters of the two arrays in C++?
Explanation
strncmp() manipulation function is used to compare two strings lexicographically until the characters differ or a null is encountered or when specified count is reached. It returns an integer value.
int * strncmp( char * str1, const char * str2, size_t count );
The following table lists the possible meanings for the value returned by "strncmp()"
Result :
Total words starting with a is::2
In the above example, this manipulation function is used to compare the array string characters lexographically to find the number of words starting with "a".
Syntax:
int * strncmp( char * str1, const char * str2, size_t count );
The following table lists the possible meanings for the value returned by "strncmp()"
| Value | Meaning |
| Less than Zero | str1 is less than str2 |
| Zero | str1 is equal to str2 |
| Greater than Zero | str1 is greater than str2 |
Example :
| #include <iostream.h> #include <string.h> int main() { char arr1[][20]={"apple","orange", "oyster", "anger"}; int i, j=0; for (i=0 ; i<4; i++) { if (strncmp (arr1[i],"a",1)==0 ) j++; } cout << "Total words starting with a is::" << j << "\n"; return 0; } |
Result :
Total words starting with a is::2
In the above example, this manipulation function is used to compare the array string characters lexographically to find the number of words starting with "a".
