The program asks the user to input their marks, then uses if/else statements to check the marks and output the corresponding grade and CGPA. It provides a grading scale that assigns grades from A+ to F based on marks ranges, and associates each grade with a cumulative grade point average from 4.00 to 0.00.

1. ## Writea program to calculateyour Grading system.
#include <stdio.h>
int main ()
{
int marks;
printf("please insert yourmarks");
scanf("%d",&marks);
if(marks>=80&&marks<=100)
printf("Mygrade is A+
and CGPA is 4.00");
else if(marks>=75&&marks<=79)
printf("Mygrade is A and CGPA is 3.75");
else if(marks>=70&&marks<=74)
printf("Mygrade is A
- and CGPA is 3.50");
else if(marks>=65&&marks<=69)
printf("Mygrade is B+
and CGPA is 3.25");
else if(marks>=60&&marks<=64)
printf("Mygrade is B and CGPA is 3.00");
else if(marks>=55&&marks<=59)
printf("Mygrade is B
-
and CGPA is 2.75");

2. else if(marks>=50&&marks<=54)
printf("Mygrade is C
+
and CGPA is 2.50");
else if(marks>=45&&marks<=49)
printf("Mygrade is C and CGPA is 2.25");
else if(marks>=40&&marks<=44)
printf("Mygrade is D and CGPA is 2.00");
else if(marks<=39)
printf("Mygrade is F and CGPA is 0.00");
return 0;
}