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  1. #include <stdio.h>
  2. char calcLetterGrade (int num_grade);
  3.  
  4. int main(void) {
  5. 	char retValue=calcLetterGrade(90);
  6.     printf("The grade is: %c\n", retValue);
  7. 	return 0;
  8. }
  9.  
  10. char calcLetterGrade (int num_grade)
  11. {
  12.    char letterGrade;
  13.  
  14.     if ( num_grade >= 90 && num_grade <= 100 ){
  15.         letterGrade="A";
  16.     }
  17.     else if ( num_grade >= 80 && num_grade <= 89 ){
  18.         letterGrade="B";
  19.     }
  20.     else if ( num_grade >= 70 && num_grade <= 79 ){
  21.         letterGrade="C";
  22.     }
  23.     else if ( num_grade >= 60 && num_grade <= 69 ){
  24.         letterGrade="D";
  25.     }
  26.     else if ( num_grade >= 0 && num_grade <= 59 ){
  27.         letterGrade="F";
  28.     }
  29.     else if ( num_grade > 100 && num_grade < 0 ){
  30.         letterGrade="I";
  31.     }
  32.     return letterGrade;
  33.  
  34. }
Success #stdin #stdout 0s 5292KB
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Standard input is empty
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The grade is: 
https://ideone.com/v3uci0
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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