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Question


Point out the error in the program


#include<stdio.h>
#define SI(p, n, r) float si; si=p*n*r/100;
int main()
{
float p=2500, r=3.5;
int n=3;
SI(p, n, r);
SI(1500, 2, 2.5);
return 0;
}
Options:
A .  26250.00 7500.00
B .  Nothing will print
C .  Error: Multiple declaration of si
D .  Garbage values
Answer: Option C

The macro #define SI(p, n, r) float si; si=p*n*r/100; contains the error. To remove this error, 

we have to modify this macro to

#define SI(p,n,r) p*n*r/100



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