Trinity - C Programming Interview Preparation Questions

C PROGRAM QUESTIONS : PART 8

What is the output of this C code?
void main()
{
int i = 0;
for (i = 0;i < 5; i++)
if (i < 4)
{
printf("Hello");
break;
}
}

Hello is printed 5 times

Hello is printed 4 times

Hello

Hello is printed 3 times

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What is the output of this C code?
void main()
{
int i = 0;
if (i == 0)
{
printf("Hello");
continue;
}
}

Hello is printed infinite times

Hello

varies

Compile time error

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What is the output of this C code?
void main()
{
int i = 0;
if (i == 0)
{
printf("Hello");
break;
}
}

Hello is printed infinite times

Hello

varies

compile time error

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What is the output of this C code?
int main()
{
int i = 0;
do
{
i++;
if (i == 2)
continue;
printf("In while loop ");
} while (i < 2);
printf("%d\n", i);
}

In while loop 2

In while loop In while loop 3

In while loop 3

Infinite loop

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What is the output of this C code?
int main()
{
int i = 0, j = 0;
for (i; i < 2; i++){
for (j = 0; j < 3; j++){
printf("1\n");
break;
}
printf("2\n");
}
printf("after loop\n");
}

1 2 after loop

1 after loop

1 2 1 2 after loop

1 1 2 after loop

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What is the output of this C code?
int main()
{
int i = 0;
while (i < 2)
{
if (i == 1)
break;
i++;
if (i == 1)
continue;
printf("In while loop\n");
}
printf("After loop\n");
}

In while loop After loop

After loop

In while loop In while loop After loop

In while loop

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What is the output of this C code?
int main()
{
int i = 0;
char c = 'a';
while (i < 2){
i++;
switch (c) {
case 'a':
printf("%c ", c);
break;
break;
}
}
printf("after loop\n");
}

a after loop

a a after loop

after loop

None of the mentioned

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What is the output of this C code?
int main()
{
printf("before continue ");
continue;
printf("after continue\n");
}

Before continue after continue

Before continue

after continue

Compile time error

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The following code ‘for(;;)’ represents an infinite loop. It can be terminated by.

break

exit(0)

abort()

All of the mentioned

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The correct syntax for running two variable for loop simultaneously is.

for (i = 0; i < n; i++) for (j = 0; j < n; j += 5)

for (i = 0, j = 0;i < n, j < n; i++, j += 5)

for (i = 0; i < n;i++){} for (j = 0; j < n;j += 5){}

None of the mentioned

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Which for loop has range of similar indexes of 'i' used in for (i = 0;i < n; i++)?

for (i = n; i>0; i–)

for (i = n; i>=0; i–)

for (i = n-1; i>0; i–)

for (i = n-1; i>-1; i–)

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Which of the following cannot be used as LHS of the expression in for (exp1;exp2; exp3) ?

Variable

Function

typedef

macros

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What is the output of this C code?
int main()
{
short i;
for (i = 1; i >= 0; i++)
printf("%d\n", i);
}

The control won’t fall into the for loop

Numbers will be displayed until the signed limit of short and throw a runtime error

Numbers will be displayed until the signed limit of short and program will successfully terminate

This program will get into an infinite loop and keep printing numbers with no errors

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C PROGRAM QUESTIONS : PART 8