Sum of prime numbers between two intervals using command line arguments:
#include<stdio.h>
#include<stdlib.h>
#include<math.h>
int main(int argc,char *argv[])
{
int a,b,i,j,s=0,c,l,u;
a=atoi(argv[1]);
l=a+1;
b=atoi(argv[2]);
u=b;
for(i=l;i<u;i++)
{
c=1;
for(j=2;j<=i/2;j++)
{
if(i%j==0)
{
c=0;
}
}
if(c==1)
{
s=s+i;
}
} printf("%d",s);
return 0;
}
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