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  1. #include <stdio.h>
  2.  
  3. char calcLetterGrade(int score);
  4.  
  5. int main(void) 
  6. {
  7.     int score = 85;
  8.     char LetterGrade = calcLetterGrade(score);
  9.     printf("%c\n", LetterGrade);
  10.  
  11.     return 0;
  12. }
  13.  
  14. char calcLetterGrade(int score) // Corrected function definition
  15. {
  16.     char result; //* letter grade result */
  17.  
  18.  
  19.     if (score > 100 || score < 0)		// check for invalid score
  20.         return 'I';
  21.  
  22.     // Map score to letter grade
  23.     if (score >= 90 && score <= 100)	// 90-100 is an A
  24.         result = 'A';
  25.     else if (score >= 80 && score <= 89) // 80-89 is a B
  26.         result = 'B';
  27.     else if (score >= 70 && score <= 79) // 70-79 is a C
  28.         result = 'C';
  29.     else if (score >= 61 && score <= 69) // 61-69 is a D
  30.         result = 'D';
  31.     else 
  32.         result = 'F';  // any other results passed through are fails as invalids were caught
  33.  
  34.     return result;
  35. }
Success #stdin #stdout 0s 5288KB
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stdin
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Standard input is empty
stdout
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B
https://ideone.com/OWWFZW
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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