Program:
#include<stdio.h>
int main()
{
int n,sum=0,i=1;
printf("Enter number: ");
scanf("%d",&n);
while(i<=n)
{
sum=sum+i;
i++;
}
printf("Sum of first %d number: %d",n,sum);
return 0;
}
Output:
#include<stdio.h>
int main()
{
int n,sum=0,i=1;
printf("Enter number: ");
scanf("%d",&n);
while(i<=n)
{
sum=sum+i;
i++;
}
printf("Sum of first %d number: %d",n,sum);
return 0;
}
Output:
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