Define the function isEven which returns True, if a given number is even and returns False, if the number is odd. Execute the statement isEven(43) and display the output.

Program :

#include <stdio.h> //header file

char* isEven(int number) //function

{

   if(number%2==0)

    return "True";

  else

   return "False";

}

int main() //mainfunction

{

   printf("%s",isEven(43)); //calling and display output.

   return 0; //return statement.

}

Output:

The above program gives as 45 output.

Explanation:

The above program is in c-language, The above function is used to check the number is even or odd.If the number is even it returns true and if the number is odd, it returns false.The print statement called that function while passing the number on the argument and print the result of the function.The char* is used in return type because the function returns the string value.

answer: when the substance contain the two parts (polar and non-polar) like soap.

explanation:

soap is produced from the basic hydrolysis of ester "saponification", it is considered as a salt of hydrocarbons. the soap molecule contains the two parts: a polar group   (-coo-na+) and a non-polar group (r-hydrocarbon part). the polar group is called the head and the tail is the non-polar group. the polar group is hydrophilic in nature (water loving) and the non-polar group is hydrophobic in nature (water repelling).the polar/non-polar nature of a substance is useful that it can dissolve the non-polar substances by the polar part and also can dissolve the polar substances by the non-polar part. it commonly used in detergents and soaps.

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