StudentMarksSum.c

// Question link - https://www.hackerrank.com/challenges/students-marks-sum/problem?isFullScreen=true

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

//Complete the following function.

int marks_summation(int* marks, int number_of_students, char gender) {
  //Write your code here.---
  int sum = 0;
  
  if(gender == 'b'){
      for (int i = 0; i < number_of_students ; i+=2){
          sum += marks[i];
      }
  }else {
      for (int i = 1; i < number_of_students; i += 2) {
          sum += marks[i];
      }
  }
  
  return sum;
}

int main() {
    int number_of_students;
    char gender;
    int sum;
  
    scanf("%d", &number_of_students);
    int *marks = (int *) malloc(number_of_students * sizeof (int));
 
    for (int student = 0; student < number_of_students; student++) {
        scanf("%d", (marks + student));
    }
    
    scanf(" %c", &gender);
    sum = marks_summation(marks, number_of_students, gender);
    printf("%d", sum);
    free(marks);
 
    return 0;
}