C Basics_1

#include <stdio.h>

int main()

{

int a[]={1,2,3,4,5};

int sum=0,i;

for(i=1;i<6;i++)

{

int s=10;

sum=sum+s+a[i];

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

}

printf("%d",sum);

return 0;

}

• 10

• 11

• Error

• 12

What is the output for the given program?

#include <stdio.h>

void main()

{

int a=18,b=1,c;

a=a>>3;

c=b+a;

printf("%d%d",a,c);

b=a^c;

printf("%d",b);

}

• 123

• 231

• 213

• 124

#include <stdio.h>

void main()

{

int a=10,b=15,c=12,d;

d=(a+b+c)/3;

d==b?printf("1"):printf("2");

a+=d;

c%=a;

printf("%d%d",a,c);

}

• 22212

• 22222

• 22201

• 22202

What will be the output of the program?

#include <stdio.h>

int main()

{

int n[]={1,2,3,4,5};

printf("%d,%d", n[-10],n[-20]);

return 0;

}

• Error

• 0,0 or Garbage Value, Garbage Value.

• 0,-1

• None of these

What will be the output of the program?

#include <stdio.h>

int main()

{

int c[20]={10,20,30,40,50,60};

printf("%d", 2[c]);

return 0;

}

• Error

• 30

• 20

• None of these

#include<stdio.h>

int main()

{

   int a[] = {5, 1, 15, 20, 25};

   int i, j, m;

   i = ++a[1];

   j = a[1]++;

   m = a[i++];

   printf("%d, %d, %d", i, j, m);

   return 0;

}

• 2, 1, 15

• 1, 2, 5 

• 3, 2, 15

• 2, 3, 20

Trace the below code:

#include<stdio.h>

#include<string.h>

int main()

{

char p[] = "zingping";

char t;

int i, j;

for(i=0,j=strlen(p)-1; i<j; i++)

{

t = p[i];

p[i] = p[j-i];

p[j-i] = t;

}

printf("%s", p);

}

• pingzing

• Nothing is printed on the screen

• zingping

• gingpinz

What is the output of C program with strings?

#include<stdio.h>

int main() {

  char str1[]="JOHN";

  char str2[20];

  str2=str1;

  printf("%s",str2);

return 0;

}

• JOHN

• J

• JOHN\0

• Compiler error

While swapping 2 numbers what precautions to be taken care?

   b = (b / a);

    a = a * b;

    b = a / b;

• Data type should be either of float and double
  

• Data type should be either of short, int and long

• All data types are accepted except for (char *)
  
  

• This code doesn’t swap 2 numbers

. Which of the following operator has the highest precedence in the following?

• ( )

• sizeof

• *

• +