Control Structures MCQs
Practice free Control Structures multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 155 questions — no login required.
Question 64hard
What will be the output of the following C code?
#include <stdio.h>
int main()
{
int *p = NULL;
for (foo(); p; p = 0)
printf("In for loop\n");
printf("After loop\n");
}Question 65hard
What will be the output of the following C code?
#include <stdio.h>
int main()
{
printf("%d ", 1);
goto l1;
printf("%d ", 2);
l1:goto l2;
printf("%d ", 3);
l2:printf("%d ", 4);
}Question 66medium
The keyword 'break' cannot be simply used within . . . . . . . .
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Question 67hard
What will be the output of the following C code?
#include <stdio.h>
int main()
{
int x = 0;
if (x == 1)
if (x == 0)
printf("inside if\n");
else
printf("inside else if\n");
else
printf("inside else\n");
}Question 68hard
What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input)
#include <stdio.h>
void main()
{
char *ch;
printf("enter a value between 1 to 3:");
scanf("%s", ch);
switch (ch)
{
case "1":
printf("1");
break;
case "2":
printf("2");
break;
}
}Question 69hard
What will be the output of the following C code?
#include <stdio.h>
int main()
{
int i = 0, j = 0;
l1: while (i < 2)
{
i++;
while (j < 3)
{
printf("loop\n");
goto l1;
}
}
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Question 70hard
What will be the output of the following C code?
#include <stdio.h>
int main()
{
int x = 0;
if (x == 0)
printf("true, ");
else if (x = 10)
printf("false, ");
printf("%d\n", x);
}Question 71hard
What will be the output of the following C code?
#include <stdio.h>
int main()
{
int i = 0;
do
{
i++;
if (i == 2)
continue;
printf("In while loop ");
} while (i < 2);
printf("%d\n", i);
}Question 72hard
What will be the output of the following C code?
#include <stdio.h>
void main()
{
int k;
for (k = -3; k < -5; k++)
printf("Hello");
}