c - Why isn't it adding my numbers correctly -

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i'm trying add 100 numbers in array code: numbers 17 117 should add lot more.

#include <stdio.h> #include <stdlib.h>  int main(){ int* number = malloc(101*sizeof(int)); int num = 0;      while (num != 101){     number[num] = 17 + num;     num = num + 1; };   num = 0;  while(num != 101){     printf(" %d \n", number[num]);     num = num + 1; }  num = 0; int sum = 0; while (num != 101){     number[num] = 17;     sum = sum + number[num];     num = num + 1;  }  printf(" %d \n ", sum );  return 0; }

the bottom print statement gives me value of 1717

while (num != 101){     number[num] = 17;     sum = sum + number[num];

remove second line has been resetting 17


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