EX2CPP

Which of the following strings is a proper integer number (in the C language sense)?
Select correct answer (single choice)
123,456
123_456
123456
123.456
What is the value of the following integer literal?
08
1000
10
the literal is invalid
What is the value of the following integer literal?
0x8
the literal is invalid
10
1000
Which of the following strings is a valid variable name?

Monte-Carlo
Monte Carlo
Monte_Carlo
Monte@Carlo
Which of the following strings is an invalid variable name?

_0
0_
___
_0_
Is the following declaration valid?

int var, var;
Yes
No
What is the value of the var variable at the end of the following snippet?
int var;
var = 2;
var = var * var;
var = var + var;
var = var / var;
var = var var;
16
What is the value of the var variable at the end of the following snippet?
int var;
var = 2;
var = var * var;
var = var + var;
/*
var = var / var;
var = var var;
*/
16
Which of the following strings is a proper floating-point number (in the C language sense)?
123,456
123.456
123_456
123456
What is the value of the following floating-point literal?

8765E-2

876.5
0.8765
8.765
87.65
What is the value of the x variable at the end of the following snippet?
int x;
x = 1 / 2;
0.5
int x;
x = 1 / 2 * 3;
/***
1.5
float x;
x = 1. / 2 * 3;
/***
1.5
What is the value of the k variable at the end of the following snippet?
int i,j,k;
i = 4;
j = 5;
k = --i * j++;

16
15
12
18
int i,j,k;
i = 4;
j = 5;
k = i-- * ++j;
21
24
18
28
int i,j,k;
i = 3;
j = -3;
k = i * j;
k += j;
k /= i;
-8
-4
What is the value of the c variable at the end of the following snippet?
char c;
c = '\';
the assignment is invalid and causes a compilation error
\0
'
What is the value of the c variable at the end of the following snippet?
char c;
c = 'a';
c -= ' ';
the assignment is invalid and causes a compilation error
\0
int i,j,k;
i = 3;
j = -3;
k = (i >= i) + (j <= j) + (i == j) + (i > j);
What happens if you try to compile and run this program?

#include <stdio.h>
int main(void) {
int i,j,k;
i = 2;
j = -2;
if(i)
i--;
if(j)
j++;
k = i * j;
printf("%d",k);
return 0;
}
the program outputs -2
the program outputs 2

#include <stdio.h>
int main(void) {
int i, j, k;
i = -1;
j = 1;
if(i)
j--;
if(j)
i++;
k = i * j;
printf("%d",k);
return 0;
}

#include <stdio.h>
int main(void) {
int i, j, k;
i = 0;
j = 0;
if(j)
j--;
else
i++;
if(i)
i--;
else
j++;
k = i + j;
printf("%d",k);
return 0;
}

#include <stdio.h>
int main(void) {
int i, j, k;
i = 2;
j = 3;
if(j)
j--;
else if(i)
i++;
else
j++;
if(j)
i--;
else if(j)
j++;
else
j = 0;
k = i + j;
printf("%d",k);
return 0;
}

#include <stdio.h>
int main(void) {
double x = -.1;
int i = x;
printf("%d",i);
return 0;
}
the program outputs -0.100000
the program outputs 0.100000

#include <stdio.h>
int main(void) {
float x,y;
int i,j;
x = 1.5; y = 2.0;
i = 2; j = 3;
x = x * y + i / j;
printf("%f",x);
return 0;
}


#include <stdio.h>
int main(void) {
float x,y;
int i,j;
x = 1.5; y = 2.0;
i = 2; j = 4;
x = x * y + (float)i / j;
printf("%f",x);
return 0;
}

#include <stdio.h>
int main(void) {
int i;
i = 1;
while(i < 16)
i *= 2;
printf("%d",i);
return 0;
}

#include <stdio.h>
int main(void) {
int i, j;
i = 1; j = 1;
while(i < 16) {
i += 4;
j++;
}
printf("%d",j);
return 0;
}

#include <stdio.h>
int main(void) {
int i = 7, j = i - i;
while(i) {
i /= 2;
j++;
}
printf("%d",j);
return 0;
}

#include <stdio.h>
int main(void) {
int i = 7, j = i - i;
while(!i) {
i /= 2;
j++;
}
printf("%d",j);
return 0;
}

#include <stdio.h>
int main(void) {
int i, j = 1;
for(i = 11; i > 0; i /= 3)
j++;
printf("%d",j);
return 0;
}

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

#include <stdio.h>
int main(void) {
int i = 1, j = -2;
for(;;) {
i *= 3;
j++;
if(i > 30)
break;
}
printf("%d",j);
return 0;
}

#include <stdio.h>
int main(void) {
int i = 1, j = -2, k;
k = (i >= 0) && (j >= 00) || (i <= 0) && (j <= 0);
printf("%d",k);
return 0;
}

#include <stdio.h>
int main(void) {
int i = 1, j = -2, k;
k = (i >= 0) || (j >= 00) && (i <= 0) || (j <= 0);
printf("%d",k);
return 0;
}

#include <stdio.h>
int main(void) {
int i = 1, j = -2, k;
k = !(i >= 0) || !(j >= 00) && !(i <= 0) || !(j <= 0);
printf("%d",k);
return 0;
}

#include <stdio.h>
int main(void) {
int i = 1, j = 0, k;
k = i & j;
k |= !!k;
printf("%d",k);
return 0;
}

#include <stdio.h>
int main(void) {
int i = 1, j = 0, k;
k = !i | j;
k = !k;
printf("%d",k);
return 0;
}

#include <stdio.h>
int main(void) {
int i = 1, j = 0, k;
k = (i ^ j) + (!i ^ j) + (i ^ !j) + (!i ^ !j);
printf("%d",k);
return 0;
}

#include <stdio.h>
int main(void) {
int i = 0, j = 1, k;
k = i << j + j << i;
printf("%d",k);
return 0;
}

#include <stdio.h>
int main(void) {
int i = 3, j = i - 2;
switch(i - 2) {
case 1: j++;
case 2: j++;
case 0: j++; break;
default:j = 0;
}
printf("%d",j);
return 0;
}

#include <stdio.h>
#include <stdio.h>
int main(void) {
int i = 3, j = i - 2;
switch(i + 2) {
case 1: j++;
case 2: j++;
default:j = 0;
case 0: j++; break;
}
printf("%d",j);
return 0;
}


#include <stdio.h>
int main(void) {
int i, t[5];
t[0] = 0;
for(i = 1; i < 5; i++)
t[i] = t[i - 1] + i;
printf("%d",t[4]);
return 0;
}

#include <stdio.h>
int main(void) {
int i, t[5];
t[4] = 0;
for(i = 3; i >= 0; i--)
t[i] = t[4] * i;
printf("%d",t[0]);
return 0;
}

#include <stdio.h>
int main(void) {
int t[2];
t[0] = 1; t[1] = 0;
printf("%d",t[t[t[t[t[0]]]]]);
return 0;
}


#include <stdio.h>
int main(void) {
int i,t[3];
for(i = 2; i >=0 ; i--)

t[i] = i - 1;
printf("%d",t[1] - t[t[0] + t[2]]);
return 0;
}

#include <stdio.h>
int main(void) {
int i,t[4] = { 1, 2, 4, 8 };
for(i = 0; i < 2 ; i++)

t[i] = t[3 - i];
printf("%d",t[2]);
return 0;
}

#include <stdio.h>
int main(void) {
int s,i,t[] = { 0, 1, 2, 3, 4, 5 };
s = 1;
for(i = 2; i < 6 ; i += i + 1)
s += t[i];
printf("%d",s);
return 0;
}

#include <stdio.h>
int main(void) {
char t[] = { 'a', 'b', 'A', 'B' };
printf("%d",t[1] - t[0] + t[3] - t[2]);

return 0;
}

#include <stdio.h>
int main(void) {
float t[5] = { 1E0, 1E1, 1E2, 1E3, 1E4 };
printf("%f",t[0] + t[2] + t[3]);

return 0;
}

#include <stdio.h>
int main(void) {
int i = 1, *j = &i, **k = &j;
printf("%d",**k);
return 0;
}

the program outputs nul
the program outputs NULL

#include <stdio.h>
int main(void) {
char t[3];
printf("%d",sizeof(t) - sizeof(t[0]));
return 0;
}

#include <stdio.h>
int main(void) {
int t[6];
printf("%d",sizeof(t) / sizeof(int));
return 0;
}

#include <stdio.h>
int main(void) {
int t[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }, *p = t + 4;
p += *p;
printf("%d",*p);
return 0;
}


#include <stdio.h>
int main(void) {
int t[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }, *p = t;
p += 2;
p += p[-1];
printf("%d",*p);
return 0;
}

#include <stdio.h>
int main(void) {
char s[] = "\0\1\2\3\4";
printf("%c",'A' + s[3]);
return 0;
}
the program outputs B
the program outputs D
the program outputs C
the program outputs A

#include <stdio.h>
int main(void) {
printf("%c","ACEGIK"[3] - 1);
return 0;
}
the program outputs E
the program outputs G

the program outputs F
the program outputs H

#include <stdio.h>
#include <string.h>
int main(void) {
char s[10] = "ABCDE";
strcpy(s + 2, "ABCDE");
printf("%d", s[0] - s[2]);
return 0;
}
#include <stdio.h>
#include <string.h>
int main(void) {
char s[11] = "CABDE";
strcat(s + 2, "CABDE");
printf("%d", s[0] - s[2]);
return 0;
}
#include <stdio.h>
#include <string.h>
int main(void) {
char s[11] = "ABCDE";
strcat(s + 2, "ABCDE");
printf("%d", s[0] - s[2]);
return 0;
}

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Which of the following strings is a proper integer number (in the C language sense)?

Select correct answer (single choice)

What is the value of the following integer literal?

Select correct answer (single choice)

the literal is invalid

What is the value of the following integer literal?

Select correct answer (single choice)

the literal is invalid

Which of the following strings is a valid variable name?

Which of the following strings is an invalid variable name?

Is the following declaration valid?

Select correct answer (single choice)

Select correct answer (single choice)

Select correct answer (single choice)

What is the value of the following floating-point literal?

Select correct answer (single choice)

Select correct answer (single choice)

Select correct answer (single choice)

Select correct answer (single choice)

Select correct answer (single choice)

Select correct answer (single choice)

the assignment is invalid and causes a compilation error

Select correct answer (single choice)

the assignment is invalid and causes a compilation error

Select correct answer (single choice)

What happens if you try to compile and run this program?

Select correct answer (single choice)

the program outputs -2

the program outputs -1

the program outputs 2

the program outputs 1

What happens if you try to compile and run this program?

the program outputs -1

the program outputs 0

the program outputs 2

the program outputs 1

What happens if you try to compile and run this program?

Select correct answer (single choice)

the program outputs 2

the program outputs -1

the program outputs 0

the program outputs 1

What happens if you try to compile and run this program?

Select correct answer (single choice)

the program outputs 2

the program outputs 3

the program outputs 0

the program outputs 1

What happens if you try to compile and run this program?

Select correct answer (single choice)

the program outputs 0

the program outputs -0.100000

the program outputs 0.100000

the program outputs -1

What happens if you try to compile and run this program?

Select correct answer (single choice)

the program outputs 3.000000

the program outputs 2.000000

the program outputs 1.000000