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root / semester_1 / tuition-c / P029.c

P029.c (519B)

---

 /* WAP to perform addition of first n natural numbers. sum = 1 + 2 + 3 + ... */
 
 #include <stdio.h>
 int main()
 {
     int num, i = 0, result = 0;
     printf("Enter the value for n : ");
     if (scanf("%d", &num) != 1)
     {
         printf("\nPlease enter a number.");
         return 1;
     }
     if (num < 1)
     {
         printf("\nPlease enter a positive number.");
         return 1;
     }
     while (i <= num)
     {
         result = result + i;
         i++;
     }
     printf("\nResult : %d", result);
     return 0;
 }