Write a c program to calculate the sum of the integer from 1 to 100?

Answer 1

#include<stdio.h>

#include<conio.h>

int main()

{

long int num,sum;

clrscr();

printf("ENTER ANY NUMBER\n");

scanf("%ld",&num);

sum=(num*(num+num))/2;

printf("Sum of the given range is %d",sum);

getch();

}

by dilkash

from MANUU.

for(int i=0;;i++)

{

i+=i;

}

///////but you have to write condition or the number to stop looping

Answer 2

#inlcude<stdio.h>

#include<conio.h>

int main()

{

int a,b=0,n;

printf("enter a number\n");

scanf("%d",&n);

while(n>=1)

{

a=n%10;

b=b+a;

n=n/10;

}

printf("sum of the digit is%d",b);

getch();

return(0);

}

Answer 3

#include <stdio.h>

int main()

{

int total=0, i;

for (i=1;i<=100;++i) total+=i;

printf("%d\n",total);

}