else if: Example program on else if

/*    This program reads a test score, calculates the letter
    grade based on the absolute scale, and prints it.
 */
#include < stdio.h >

 //    Function Declarations
 char scoreToGrade(int score);

int main(void) {
  //    Local Declarations
  int score;
  char grade;

  //    Statements
  printf("Enter the test score (0-100): ");
  scanf("%d", & score);

  grade = scoreToGrade(score);
  printf("The grade is: %c\n", grade);

  return 0;
 } // main

/*    =================== scoreToGrade ===================
    This function calculates letter grade for a score.
       Pre   the parameter score
       Post  returns the grade
*/
char scoreToGrade(int score) {
  //    Local Declarations
  char grade;

  //    Statements
  if (score >= 90) {
   grade = 'A';
  } else if (score >= 80) {
   grade = 'B';
  } else if (score >= 70) {
   grade = 'C';
  } else if (score >= 60) {
   grade = 'D';
  } else {
   grade = 'F';
  } //end if

  return grade;

 } // scoreToGrade

/*    Results:
Enter the test score (0-100): 90
The grade is: A
*/


 Conditional statements