TCS Technical MCQs

Questions 1: What will be the output of the following code?

#include < stdio.h >
int  main()
  {
   const int x=5;
   const int *const p=&x;
   x++;
   printf("\n %d",x);
return 0;
}

Answer: d) Compile Error

Questions 2: Predict the output of the following code :

#include < stdio.h >
int main()
{
   int n=35;
   int i=0;
   while (n%10!=0){
     n=n+3;
     i++;
    }
    n=n+i;
    printf("%d",n);
return 0;
}

Answer: c) 55

Questions 3: What will be the output of the following code?

#include < stdio.h >
int main(){
   int n=10;
   int i=5;
   int sum=0;
   while (i < n){
      sum=sum+i;
      i++;
    }
   printf("%d",sum);
return 0;
}        

Answer: a) 35

Questions 4: Predict the output of the following code :

#include < stdio.h >
int main(){
   int a;
   float b=7.0;
   switch (a=b+1)
   {
    case 8: printf("TCS Digital");
         break;
     default: printf("TCS Ninja");
     }
return 0;
}            

Answer: a) TCS Digital

Questions 5: Predict the output of the following code :

#include < stdio.h >
int main(){
int number=6;
   int k=2,i=2;
   int sum=0;
   while (i<=number){
      k = k * i;                
      i = i +1 ;
    }
    printf("%d",k);
return 0;
}  

Answer: b) 1440

Questions 6: How many times 'a' will be displayed on the screen?

#include < stdio.h > 
int main(){
  int input=25;
  while (input > 0){
  if(input > 0 && input < =10)
     printf("a");
  else if(input  >10 && input < =20)
     printf("aa");
   else if(input >20 && input <= 30)
     printf("aaa");
   input--;
   }
return 0;
}

Answer: b) 45

Questions 7: What will be the output of the following code ?

#include < stdio.h >
int main(){
  int n=5,i=2;
  while(i<=n){
      printf("%d",i);
      i++;
   }
return 0;
}                

Answer: b) 2 3 4 5

Questions 8: What will be the output of the following question?

#include < stdio.h >
int main(){
   int j=2,k=5,m=6,n=9;
   while(j < k){
       while(m < n)
       {
        printf("Hello");
        m++;
        }
     j++;
}
return 0;
}
    

Answer: b) Hello Hello Hello

Questions 9: What will be the output of the following question?

#include < stdio.h >
int main(){
  int number=4;
  while(number!=8)
  {
  printf("\n%d",2*number);
  number=number+2;
  }
return 0;
}

Answer: b) 8 12

Questions 10: What will be the output of the following code?

#include 
int main()
{        
  int data=5,counter;
  for(counter=1;counter<=5;counter++)
      data+=counter;
      printf("%d",data);
      return 0;
}

Answer: d) 20