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What will be the output of the program?

 #include 
 int main()
 {   
    int a = 300, b, c;   
    if(a >= 400)     
         b = 300;     
    c = 200;     
    printf("%d, %d, %d\n", a, b, c);       
    return 0; 
}

A.

300, 300, 200

B.

Garbage, 300, 200

C.

300, Garbage, 200

D.

300, 300, Garbage

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What will be the output of the program?

 #include
 int main()
 {    
    int x=1, y=1;   
    for(; y; printf("%d %d\n", x, y))     
    {     
         y = x++ 5;  
    } 
    printf("\n");   
    return 0; 
 }

A.

2 1
3 1
4 1
5 1
6 1
7 0

B.

2 1
3 1
4 1
5 1
6 1

C.

2 1
3 1
4 1
5 1

D.

2 2
3 3
4 4
5 5

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What will be the output of the program?

 #include 
 int main()
 {     
     int i = 5; 
     while(i-- >= 0)           
        printf("%d,", i);  
    i = 5;   
    printf("\n");   
    while(i-- >= 0)         
        printf("%i,", i);       
    while(i-- >= 0)           
       printf("%d,", i); 
    return 0;
 }

A.

4, 3, 2, 1, 0, -1
4, 3, 2, 1, 0, -1

B.

5, 4, 3, 2, 1, 0
5, 4, 3, 2, 1, 0

C.

Error

D.

5, 4, 3, 2, 1, 0
5, 4, 3, 2, 1, 0
5, 4, 3, 2, 1, 0

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Answer : Option A

Explanation :

Step 1: Initially the value of variable i is '5'.
Loop 1: while(i-- >= 0) here i = 5, this statement becomes while(5-- >= 0) Hence the while condition is satisfied and it prints '4'. (variable 'i' is decremented by '1'(one) in previous while condition)
Loop 2: while(i-- >= 0) here i = 4, this statement becomes while(4-- >= 0) Hence the while condition is satisfied and it prints '3'. (variable 'i' is decremented by '1'(one) in previous while condition)
Loop 3: while(i-- >= 0) here i = 3, this statement becomes while(3-- >= 0) Hence the while condition is satisfied and it prints '2'. (variable 'i' is decremented by '1'(one) in previous while condition)
Loop 4: while(i-- >= 0) here i = 2, this statement becomes while(2-- >= 0) Hence the while condition is satisfied and it prints '1'. (variable 'i' is decremented by '1'(one) in previous while condition)
Loop 5: while(i-- >= 0) here i = 1, this statement becomes while(1-- >= 0) Hence the while condition is satisfied and it prints '0'. (variable 'i' is decremented by '1'(one) in previous while condition)
Loop 6: while(i-- >= 0) here i = 0, this statement becomes while(0-- >= 0) Hence the while condition is satisfied and it prints '-1'. (variable 'i' is decremented by '1'(one) in previous while condition)
Loop 7: while(i-- >= 0) here i = -1, this statement becomes while(-1-- >= 0) Hence the while condition is not satisfied and loop exits.
The output of first while loop is 4,3,2,1,0,-1

Step 2: Then the value of variable i is initialized to '5' Then it prints a new line character(\n).
See the above Loop 1 to Loop 7 .
The output of second while loop is 4,3,2,1,0,-1

Step 3: The third while loop, while(i-- >= 0) here i = -1(because the variable 'i' is decremented to '-1' by previous while loop and it never initialized.). This statement becomes while(-1-- >= 0) Hence the while condition is not satisfied and loop exits.

Hence the output of the program is
4,3,2,1,0,-1
4,3,2,1,0,-1

What will be the output of the program?

#include 
 int main() 
 { 
     int i=3;   
     switch(i)  
     {         
         case 1:                 
            printf("Hello\n");         
         case 2:             
            printf("Hi\n");         
         case 3:             
            continue;         
         default:             
             printf("Bye\n");  
    }   
    return 0; 
}

A.

Error: Misplaced continue

B.

Bye

C.

No output

D.

Hello Hi

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What will be the output of the program?

#include
 int main() 
 {    
    int x = 10, y = 20;   
    if(!(!x) && x)     
        printf("x = %d\n", x);      
    else    
       printf("y = %d\n", y);       
   return 0;
 }

A.

y =20

B.

x = 0

C.

x = 10

D.

x = 1

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What will be the output of the program?

#include 
 int main()
 {     
    int i=4;  
    switch(i)   
    {       
      default:               
         printf("This is default\n");           
      case 1:     
         printf("This is case 1\n");               
         break;      
      case 2:       
         printf("This is case 2\n");            
         break;    
      case 3:        
         printf("This is case 3\n");       
   }   
   return 0; 
}

A.

This is default
This is case 1

B.

This is case 3
This is default

C.

This is case 1
This is case 3

D.

This is default

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What will be the output of the program?

 #include 
 int main()
 {    
     int i = 1;   
     switch(i)    
     {       
         printf("Hello\n");     
         case 1:         
             printf("Hi\n");         
             break;  
         case 2:      
             printf("\nBye\n");     
             break;    
     }     
     return 0;
  }

A.

Hello
Hi

B.

Hello
Bye

C.

Hi

D.

Bye

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What will be the output of the program?

#include 
 int main()
 {    
       char j=1;  
       while(j 5)   
       {        
            printf("%d, ", j);     
            j = j+1;     
        }  
         printf("\n");   
         return 0;
   }

A.

1 2 3 ... 127

B.

1 2 3 ... 255

C.

1 2 3 ... 127 128 0 1 2 3 ... infinite times

D.

1, 2, 3, 4

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What will be the output of the program?

 #include 
 int main()
 {  
     int x, y, z;  
     x=y=z=1;   
     z = ++x || ++y && ++z;    
     printf("x=%d, y=%d, z=%d\n", x, y, z);    
     return 0;
 }

A.

x=2, y=1, z=1

B.

x=2, y=2, z=1

C.

x=2, y=2, z=2

D.

x=1, y=2, z=1