Answer :

#include<stdio.h>  //header file contains the function,decleraction and macro defination of key words used in code.

int main ()

{

float eng,maths,sci,mara,soc_sci,percentage,totalmarks=500,add;   //adressing the variables

printf("Enter your marks in English ");   //output

scanf("%f",&eng);  //adressing the variables

printf("Enter your marks in Maths ");   //output

scanf("%f",&maths);  //adressing the variables

printf("Enter your marks in Science ");   //output

scanf("%f",&sci);  //adressing the variables

printf("Enter your marks in Marathi ");   //output

scanf("%f",&mara); //adressing the variables

printf("Enter your marks in Social Science ");   //output

scanf("%f",&soc_sci);  //adressing the variables

printf("\n************************************************\n\n");   //output desgin

printf("English=%.2f\tScience=%.2f\tMarathi=%.2f\t\nMaths=%.2f\tSocial Science=%.2f\n",eng,sci,mara,maths,soc_sci);   //output the mrks enter

printf("\n************************************************\n\n");   //output desgin

add=eng+maths+mara+sci+soc_sci; // addition of marks

printf("Total marks you got is %.2f\n\n",add);  //output of total marks gained.

percentage=add/totalmarks*100;  // percentage formula.

printf("%.2f is the percentage you got\n\n",percentage);   //output

if (percentage>=81 && percentage<=100) // condition

{

printf("#####################################\n\n");   //output desgin

printf("\tYou got Grade \"A\"");   //output

printf("\n\n#####################################");   //output desgin

}

else if (percentage>=61 && percentage<=80)  //condition

{

printf("#####################################\n\n");   //output desgin

printf("\tYou got Grade \"B\"");   //output

printf("\n\n#####################################"); //output desgin 

}

else if (percentage>=40 && percentage<=60)  //condition

{

printf("#####################################\n\n"); //output desgin

printf("\tYou have passed");   //output

printf("\n\n#####################################");  //output desgin

}

else

{

printf("#####################################\n\n");  //output desgin

printf("\tYou have failed");   //output

printf("\n\n#####################################");  //output desgin

}

}


Output :