In this program, You will learn how to find the sum of all prime numbers between 1 to n in c.

`Sum of prime numbers upto 10th : 2 + 3 + 5 + 7 = 17`

## Example: How to find the sum of all prime numbers between 1 to n in c.

```
#include<stdio.h>
int main() {
int n, i, j, p, s = 0;
printf("Enter a number:");
scanf("%d", &n);
printf("List of prime numbers:");
for (i = 2; i < n; i++) {
p = 1;
for (j = 2; j < i; j++) {
if (i % j == 0) {
p = 0;
break;
}
}
if (p == 1) {
printf("%d ", i);
s = s + i;
}
}
printf("\nSum of prime numbers:%d", s);
return 0;
}
```

#### Output:

```
Enter a number:10
List of prime numbers:2 3 5 7
Sum of prime numbers:17
```