Data Structure and Algorithms (DSA) MCQs with answers Page - 28

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Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
#define x 5+2
int main(){
int i;
i=xxx;
printf("%d",i); return 0;
}

(A) 343
(B) 27
(C) 133
(D) compiler error

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Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
char c=125;
c=c+10;
printf("%d",c); return 0;
}

(A) 135
(B) +inf
(C) -121
(D) -8

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Q. What will be output if you will compile and execute the following c code? #include<stdio.h> int main(){
float a=5.2;
if(a==5.2)
printf("Equal");
else if(a<5.2)
printf("Less than");
else
printf("Greater than"); return 0;
}

(A) equal
(B) less than
(C) greater than
(D) compiler error

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Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
int i=4,x;
x=++i + ++i + ++i;
printf("%d",x); return 0;
}

(A) 21
(B) 18
(C) 12
(D) compiler error

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Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
int a=2;
if(a==2){
a=~a+2<<1;
printf("%d",a);
}
else{
break;
} return 0;
}

(A) it will print nothing
(B) -3
(C) -2
(D) compiler error

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Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
int a=10;
printf("%d %d %d",a,a++,++a); return 0;
}

(A) 12 11 11
(B) 12 10 10
(C) 11 11 12
(D) 10 10 12

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Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
char *str="Hello world";
printf("%d",printf("%s",str)); return 0;
}

(A) 10hello world
(B) 11hello world
(C) hello world12
(D) hello world13

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Q. What will be output if you will compile and execute the following c code?
#include <stdio.h>
#include <string.h>
int main(){
char *str=NULL;
strcpy(str,"cquestionbank");
printf("%s",str); return 0;
}

(A) cquestionbank
(B) cquestionbank\0
(C) (null)
(D) it will print nothing

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

(A) 0 1 2 3
(B) 0 1 2
(C) 1 2 3
(D) compiler error

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Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
int x;
for(x=1;x<=5;x++);
printf("%d",x); return 0;
}

(A) 4
(B) 5
(C) 6
(D) compiler error

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Data Structure and Algorithms (DSA) MCQs with answers Page - 28

Q. What will be output if you will compile and execute the following c code? #include<stdio.h> #define x 5+2 int main(){ int i; i=x*x*x; printf("%d",i); return 0; }

Q. What will be output if you will compile and execute the following c code? #include<stdio.h> int main(){ char c=125; c=c+10; printf("%d",c); return 0; }

Q. What will be output if you will compile and execute the following c code? #include<stdio.h> int main(){ float a=5.2; if(a==5.2) printf("Equal"); else if(a<5.2) printf("Less than"); else printf("Greater than"); return 0; }

Q. What will be output if you will compile and execute the following c code? #include<stdio.h> int main(){ int i=4,x; x=++i + ++i + ++i; printf("%d",x); return 0; }

Q. What will be output if you will compile and execute the following c code? #include<stdio.h> int main(){ int a=2; if(a==2){ a=~a+2<<1; printf("%d",a); } else{ break; } return 0; }

Q. What will be output if you will compile and execute the following c code? #include<stdio.h> int main(){ int a=10; printf("%d %d %d",a,a++,++a); return 0; }

Q. What will be output if you will compile and execute the following c code? #include<stdio.h> int main(){ char *str="Hello world"; printf("%d",printf("%s",str)); return 0; }

Q. What will be output if you will compile and execute the following c code? #include <stdio.h> #include <string.h> int main(){ char *str=NULL; strcpy(str,"cquestionbank"); printf("%s",str); return 0; }

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

Q. What will be output if you will compile and execute the following c code? #include<stdio.h> int main(){ int x; for(x=1;x<=5;x++); printf("%d",x); return 0; }

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Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
#define x 5+2
int main(){
int i;
i=xxx;
printf("%d",i); return 0;
}

Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
char c=125;
c=c+10;
printf("%d",c); return 0;
}

Q. What will be output if you will compile and execute the following c code? #include<stdio.h> int main(){
float a=5.2;
if(a==5.2)
printf("Equal");
else if(a<5.2)
printf("Less than");
else
printf("Greater than"); return 0;
}

Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
int i=4,x;
x=++i + ++i + ++i;
printf("%d",x); return 0;
}

Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
int a=2;
if(a==2){
a=~a+2<<1;
printf("%d",a);
}
else{
break;
} return 0;
}

Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
int a=10;
printf("%d %d %d",a,a++,++a); return 0;
}

Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
char *str="Hello world";
printf("%d",printf("%s",str)); return 0;
}

Q. What will be output if you will compile and execute the following c code?
#include <stdio.h>
#include <string.h>
int main(){
char *str=NULL;
strcpy(str,"cquestionbank");
printf("%s",str); return 0;
}

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

Q. What will be output if you will compile and execute the following c code? #include<stdio.h>
int main(){
int x;
for(x=1;x<=5;x++);
printf("%d",x); return 0;
}