/* ASSERT.C: In this program, the analyze_string function uses * the assert function to test several conditions related to * string and length. If any of the conditions fails, the program * prints a message indicating what caused the failure. */#include <stdio.h>#include <assert.h>#include <string.h>void analyze_string( char *string );   /* Prototype */void main( void ){   char  test1[] = "abc", *test2 = NULL, test3[] = "";   printf ( "Analyzing string ‘%s‘\n", test1 );   analyze_string( test1 );   printf ( "Analyzing string ‘%s‘\n", test2 );   analyze_string( test2 );   printf ( "Analyzing string ‘%s‘\n", test3 );   analyze_string( test3 );}/* Tests a string to see if it is NULL, */ /*   empty, or longer than 0 characters */void analyze_string( char * string ){   assert( string != NULL );        /* Cannot be NULL */   assert( *string != ‘\0‘ );       /* Cannot be empty */   assert( strlen( string ) > 2 );  /* Length must exceed 2 */}OutputAnalyzing string ‘abc‘Analyzing string ‘(null)‘Assertion failed: string != NULL, file assert.c, line 24abnormal program termination