INTERVIEW QUESTIONS C FILE OPERATIONS IN C DETAILS

Question: 1.WAP find the largest of 4 no using macros
2.WAP read a line from file from location N1 to N2 using command line agruments Eg:exe 10 20 a.c

Answer: Ans 1: #define max(a,b,c,d) (((a>b?a:b) > (c>d?c:d) ) ? (a>b?a:b) : (a>b?a:b))

Ans 1: #define max(a,b,c,d) (((a>b?a:b) > (c>d?c:d) ) ? (a>b?a:b) : (a>b?a:b)) Source: CoolInterview.com

#include<stdio.h>
#define MAX(x,y) ((x > y )? x : y )
int main()
{
int a,b,c,d;
int max1,max2,max;
printf("
Enter the four digits");
scanf("%d%d%d%d",&a,&b,&c,&d);
if( MAX(a,b) == a )
if( MAX(a,c) == a )
if(MAX(a,d) == a)
printf("
MAx is %d",a);
else
printf("
MAx is %d",d);
else
if( MAX(c,d) == c)
printf("
MAx is %d",c);
else
printf("
MAx is %d",d);
else
if( MAX ( b,c ) == b)
if(MAX(b,d) ==b )
printf("
MAx is %d",b);
else
printf("
MAx is %d",d);
else
if( MAX(c,d) == c)
printf("
MAx is %d",c);
else
printf("
MAx is %d",d);

system("pause");
return 0;

}
Source: CoolInterview.com

#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define LARGEST(a,b,c,d) (MAX((a), MAX((b), MAX((c) , (d)))))
void main()
{

printf("Largest 4,10,17,29 is %d",LARGEST(4,10,17,29));
}

Source: CoolInterview.com

i would like to thank Mr.Syed Baseer Ahmed for the most compact and accurate code.nice work sir. Source: CoolInterview.com

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