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Recent questions tagged undefined-behaviour

1 votes
2 answers
2
Gate CS
#include<stdio.h> int main() { int x, y = 7; x = ++y + ++y + y--; printf("%d\n", x); return 0; } What is the output of this code snippet ? A. 27 B. 26 C. 25 D. Compilation error
#include<stdio.h int main() { int x, y = 7; x = ++y + ++y + y ; printf("%d\n", x); return 0; }What is the output of this code snippet ?A. 27B. 26C. 25D. Compilation error...
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1 votes
2 answers
7
c++ program
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0 votes
1 answer
8
c program
#include<stdio.h> int main() { char *p1="xyz"; char *p2="xyz"; if(p1==p2) printf("equal"); else printf("unequal"); } Output is equal how??? please explain
#include<stdio.h int main() { char *p1="xyz"; char *p2="xyz"; if(p1==p2) printf("equal"); else printf("unequal"); }Output is equal how??? please explain
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1 votes
1 answer
9
What is the Output?
#include<stdio.h> int main() { int a = 10, b = 20, c = 30, d = 40; printf("%d%d%d",a, b, c); printf("%d%d%d", d); return 0; } What is the Output and when I run it I am getting some wierd answer. Please explain ?
#include<stdio.h>int main(){int a = 10, b = 20, c = 30, d = 40;printf("%d%d%d",a, b, c);printf("%d%d%d", d);return 0;}What is the Output and when I run it I am getting so...
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2 votes
1 answer
10
c program
#include<stdio.h> #include<stdlib.h> int main() { int p=9; printf("%d %d",p++,++p); } how it executed and also how printf function executed left to right or right to left?
#include<stdio.h #include<stdlib.h int main() { int p=9; printf("%d %d",p++,++p); } how it executed and also how printf function executed left to right or right to left?
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1 votes
1 answer
11
C Program
#include<stdio.h> #define CUBE(x) (x*x*x) int main() { int a, b=3; a = CUBE(b++); printf("%d, %d ", a, b); return 0; } Why this give 27,6 as output?
#include<stdio.h #define CUBE(x) (x*x*x) int main() { int a, b=3; a = CUBE(b++); printf("%d, %d ", a, b); return 0; }Why this give 27,6 as output?
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21 votes
1 answer
12
Undefined Behaviour in C
What will be the output of the following code? #include<stdio.h> int main() { int x=10, y; y = (x++) + (++x); printf("%d %d %d %d ", y, x++, x, ++x); } 22,10,11,13 22,11,11,11 12,10,11,13 22 13 13 13
What will be the output of the following code?#include<stdio.h int main() { int x=10, y; y = (x++) + (++x); printf("%d %d %d %d ", y, x++, x, ++x); }22,10,11,1322,11,11,1...
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13 votes
8 answers
13
ISRO2015-69
If n has 3, then the statement a[++n]=n++; assigns 3 to a[5] assigns 4 to a[5] assigns 4 to a[4] what is assigned is compiler dependent
If n has 3, then the statement a[++n]=n++;assigns 3 to a[5]assigns 4 to a[5]assigns 4 to a[4]what is assigned is compiler dependent
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0 votes
4 answers
14
If a= 10 then what will be the value of b in a C language code
If a= 10 then what will be the value of b in a C language code . If b= a++ + a++ + a++; . 30. 23. 33. Undefined behaviour
If a= 10 then what will be the value of b in a C language code.If b= a++ + a++ + a++;.30.23.33.Undefined behaviour
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