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C if else Tricky Questions
In most of the MNC interview questions such as in ZOHO interview question, IVTL Infoview interview questions, Amazon interview questions, GOOGLE interview questions, Infosys interview questions and even in Voonik interview questions, We come across several Tricky C Questions about which 2:5 of the questions are from if else in c. Solving that kind of tricky C questions is not an easy task for all C programmers. We need more practices to solve it with ease. So we provide 25+ interesting C questions in if else to make your MNC interview very easy.
C if else Questions
16. What will be the output of the C program?
#include<stdio.h>
int main()
{
int i = 5, j = 6, k = 7;
if(i > j == k)
printf("%d %d %d", i++, ++j, --k);
else
printf("%d %d %d", i, j, k);
return 0;
}
x
Option: B
Explanation
The if statement condition is (i > j == k) becomes (5 > 6 == 7) its looks like (expression1 == expression2), expression1 becomes 0 and expression2 is a non-zero value so expression2 returns 1. Finally the condition is False (0 == 1) so else block gets executed.
For Example
*(ptr + 0) = 2
*(ptr + 1) = 3
*(ptr + 2) = 5
*(ptr + 3) = 7
*(ptr + 4) = 11
*(ptr + 5) = 13
17. What will be the output of the C program?
#include<stdio.h>
int main()
{
int i = 2;
if(i == (1, 2))
printf("Hai");
else
printf("No Hai");
return 0;
}
x
Option: C
Explanation
The condition if(i == (1, 2)) is if(expression1 == (expression2, expression3)). The expression3 is evaluated last so the if block gets executed.
18. What will be the output of the C program?
#include<stdio.h>
int main(){
char str[8] = "2braces";
char str1[8] = "2braces";
if(str == str1)
printf("Strings are Equal");
else
printf("Not Equal");
return 0;
}
x
Option: D
Explanation
String cannot be compared normally using == operator, if we compared two strings using == operator, a character alone will be compared which usually some random special character.
#include<stdio.h>
int main(){
char str[8] = "2braces";
printf("%c",str);
return 0;
}
19. What will be the output of the C program?
#include<stdio.h>
int main(){
int i = 5;
if(i == 3, 4)
printf("Hai");
else
printf("No Hai");
return 0;
}
x
Option: A
Explanation
The if statement in the above C program is if(i == 3, 4) which means if(expression1 == expression2), expression1 is a direct non-zero value so it always returns 1 and expression 2 has a , operator it acts as a seperate expression and returns 1. So the condition is true and if block gets executed. But if you run the below program:
#include<stdio.h>
int main(){
int i = 5;
if(i == 3)
printf("Hai");
else
printf("No Hai");
return 0;
}This C program will print No Hai.
20. What will be the output of the C program?
#include<stdio.h>
int main(){
char *str = {"2braces"};
char *str1 = {"2braces"};
if(*str == *str1)
printf("inside if block");
else
printf("inside else block");
return 0;
}
x
Option: C
Explanation
In the above C program, while comparing two strings using pointer character variables, the *str and *str1 will takes complete memory location to compare two strings.
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