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#include <stdio.h>
 
int main()
{
int numberGrade;
char letterGrade;
 
scanf("%d",&numberGrade);
switch (numberGrade) {
 case 4: letterGrade = 'A';
 case 3: letterGrade = ‘B’;
 case 2: letterGrade = ‘C’;
 case 1: letterGrade = ‘D’;
 case 0: letterGrade = ‘F’;
 break;
 default: ;
}
printf("%c" letterGrade);
}
 

prog.c:11:24: error: non-ASCII characters are not allowed outside of literals and identifiers
 case 3: letterGrade = ‘B’;
                       ^
prog.c:11:28: error: non-ASCII characters are not allowed outside of literals and identifiers
 case 3: letterGrade = ‘B’;
                         ^
prog.c:11:27: error: use of undeclared identifier 'B'
 case 3: letterGrade = ‘B’;
                        ^
prog.c:12:24: error: non-ASCII characters are not allowed outside of literals and identifiers
 case 2: letterGrade = ‘C’;
                       ^
prog.c:12:28: error: non-ASCII characters are not allowed outside of literals and identifiers
 case 2: letterGrade = ‘C’;
                         ^
prog.c:12:27: error: use of undeclared identifier 'C'
 case 2: letterGrade = ‘C’;
                        ^
prog.c:13:24: error: non-ASCII characters are not allowed outside of literals and identifiers
 case 1: letterGrade = ‘D’;
                       ^
prog.c:13:28: error: non-ASCII characters are not allowed outside of literals and identifiers
 case 1: letterGrade = ‘D’;
                         ^
prog.c:13:27: error: use of undeclared identifier 'D'
 case 1: letterGrade = ‘D’;
                        ^
prog.c:14:24: error: non-ASCII characters are not allowed outside of literals and identifiers
 case 0: letterGrade = ‘F’;
                       ^
prog.c:14:28: error: non-ASCII characters are not allowed outside of literals and identifiers
 case 0: letterGrade = ‘F’;
                         ^
prog.c:14:27: error: use of undeclared identifier 'F'
 case 0: letterGrade = ‘F’;
                        ^
prog.c:18:13: error: expected ')'
printf("%c" letterGrade);
            ^
prog.c:18:7: note: to match this '('
printf("%c" letterGrade);
      ^
13 errors generated.

Standard output is empty