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write the C program
The function turn_to_letter decides on the letter grade of the student according to the table below from the visa and final grades sent into it and returns it, write it together with a main function which the turn_to_letter function is called and prints the letter equivalent on the screen. -Success score = 40% of midterm + 60% of final,
-F for the success score below 50, D for between 50 and 59, C for between 60 and 69, B for between 70 and 79, A for 80 and above.

Sagot :

MrRoyalidn

Answer:

The program in C is as follows:

#include <stdio.h>

char turn_to_letter(double score){

   char lettergrade = 'A';

   if(score>=80){        lettergrade = 'A';    }

   else if(score>=70){        lettergrade = 'B';    }

   else if(score>=60){        lettergrade = 'C';    }

   else if(score>=50){        lettergrade = 'D';    }

   else{lettergrade = 'F';}

   return lettergrade;

}

int main(){

   int midterm, final;

   double score;

   printf("Midterm: ");    scanf("%d", &midterm);

   printf("Final: ");    scanf("%d", &final);  

   score = 0.4 * midterm + 0.6 * final;

   printf("Score: %lf\n", score);

   printf("Letter Grade: %c",turn_to_letter(score));

   return 0;

}

Explanation:

The function begins here

char turn_to_letter(double score){

This initializes lettergrade to A

   char lettergrade = 'A';

For scores above or equal to 80, grade is A

   if(score>=80){        lettergrade = 'A';    }

For scores above or equal to 70, grade is B

   else if(score>=70){        lettergrade = 'B';    }

For scores above or equal to 60, grade is C

   else if(score>=60){        lettergrade = 'C';    }

For scores above or equal to 50, grade is D

   else if(score>=50){        lettergrade = 'D';    }

Grade is F for other scores

   else{lettergrade = 'F';}

This returns the letter grade

   return lettergrade;

}

The main begins here

int main(){

This declares the midterm and final scores as integer

   int midterm, final;

This declares the total score as double

   double score;

These get input for midterm score

   printf("Midterm: ");    scanf("%d", &midterm);

These get input for final score

   printf("Final: ");    scanf("%d", &final);  

This calculates the total score

   score = 0.4 * midterm + 0.6 * final;

This prints the calculated total score

   printf("Score: %lf\n", score);

This calls the turn_to_letter function and prints the returned letter grade

   printf("Letter Grade: %c",turn_to_letter(score));

   return 0;

}

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