Решение задачи Proc 21

#include <stdio.h>
int sumrange(int a, int b){
   int sum=0;
   for (;a<=b;++a){sum+=a;}
   return sum;
}
 
int main(void)
{
    int a,b,c;
    printf("a:");
    scanf("%i", &a);
    printf("b:");
    scanf("%i", &b);
    printf("c:");
    scanf("%i", &c);
    printf("Sum:%i\n",sumrange(a,b));
    printf("Sum:%i\n",sumrange(b,c));
    return 0;
}

import random
import math

def SumRange(A,B):
    if A > B:
        return 0
    else:
        return sum(range(A,B+1))

A,B,C = [random.randrange(1,11) for i in range(0,3)]
print("A =",A)
print("B =",B)
print("C =",C)
print("SumRange({0},{1}) = {2}".format(A,B,SumRange(A,B)))
print("SumRange({0},{1}) = {2}".format(B,C,SumRange(B,C)))
									

program Proc21;
 
Function SumRange(A,B:Integer):Integer;
var
 i,TempSum:Integer;
begin
 TempSum:=0;
 For i:=A to B do
  begin
   TempSum:=TempSum + i;
  end;
  SumRange:=TempSum;
end;
 
var
  A,B,C:Integer;
 
begin
  Write('A :');
  Readln(A);
  Write('B :');
  Readln(B);
  Write('C :');
  Readln(C);
 
  Writeln(SumRange(A,B));
  Writeln(SumRange(B,C));
end.