To calculate sum of subjects and find percentage

```
#include < stdio.h >
int main()
{
int n,b,i,total;
printf("Enter the number of subjects \n");
scanf("%d",&n);
float marks[n],percentage,sum=0;
printf("Enter the maximum marks for one subject \n");
scanf("%d",&b);
total=b*n;
printf("Enter the marks\n");
for(i=0;i<n;i++)
{
scanf("%f",&marks[i]);
sum+=marks[i];
}
printf("The sum is %f\n",sum);
//formula for calculating percentage
percentage=(100*sum)/total;
printf("The percentage is %f",percentage);
return 0;
}
```