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Create Sum_upto_n.c #102

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Create Sum_upto_n.c #102

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32 changes: 32 additions & 0 deletions Recursion/Sum_upto_n.c
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Original file line number Diff line number Diff line change
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#include<stdio.h>

int sumOfRange(int);

int main()
{
int n1;
int sum;
printf("\n\n Recursion : calculate the sum of numbers from 1 to n :\n");
printf("-----------------------------------------------------------\n");

printf(" Input the last number of the range starting from 1 : ");
scanf("%d", &n1);

sum = sumOfRange(n1);
printf("\n The sum of numbers from 1 to %d : %d\n\n", n1, sum);

return (0);
}

int sumOfRange(int n1)
{
int res;
if (n1 == 1)
{
return (1);
} else
{
res = n1 + sumOfRange(n1 - 1); //calling the function sumOfRange itself
}
return (res);
}