Write the C program take student marks as input from 0–100 and Print the results (A-E). Write a statement to handle invalid inputs ?
1 min readSep 12, 2023
85 -100 — A+
70 -84 — A
65 -69 — A
60 -64 — B+
55 -59 — B
50 -54 — B
45 -49 — C+
40 -44 — C
35 -39 — C
30 -34 — D+
25 -29 — D
00 -24 — E
Answer is — >>
#include<stdio.h>
int main(){
int m;
printf(“enter your mark :\n”);
scanf(“%d”,&m);
if(m>0 && m<100){
switch(m/5){
case 20 : case 19: case 18: case 17:
printf(“ A+”);
break;
case 16: case 15: case 14:
printf(“ A”);
break;
case 13:
printf(“ A-”);
break;
case 12:
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printf(“ B+”);
break;
case 11:
printf(“ B”);
break;
case 10:
printf(“ B-”);
break;
case 9:
printf(“ c+”);
break;
case 8:
printf(“ C”);
break;
case 7:
printf(“ c-”);
break;
case 6:
printf(“ D+”);
break;
case 5:
printf(“ D”);
break;
case 4: case 3: case 2: case 1:
printf(“ E”);
break;
}
}else{
printf(“\n\n invalid marks \n”)
}
return 0;
}
