Shift Operators

Q

What will be printed as the result of the operation below:

          main() {
              int x=5;
             
printf("%d,%d,%d\n",x,x<<2,x>>2);
          }

✍: FYIcenter

A

As x = 5 = 0x0000,0101; so x << 2 -< 0x0001,0100 = 20; x >> 2 -> 0x0000,0001 = 1. Therefore, the answer is 5, 20, 1.

2007-02-26, 7461👍, 0💬

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What will be printed as the result of the operation below: main() { char s1[]="Cisco"; char s2[]="systems"; printf("%s",s1); } Answer: Cisco 2007-02-26, 8372👍, 0💬

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"union" Data Type
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What will be printed as the result of the operation below: main() { char *p1; char *p2; p1=(char *)malloc(25); p2=(char *)malloc(25); strcpy(p1,"Cisco"); strcpy(p2,"systems"); strcat(p1,p2); printf("%s",p1); } Answer: Ciscosystems 2007-02-26, 7701👍, 0💬

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The following variable is available in file1.c, who can access it? static int average; Answer: all the functions in the file1.c can access the variable. 2007-02-26, 7611👍, 0💬

Shift Operators
What will be printed as the result of the operation below: main() { int x=5; printf("%d,%d,%d\n",x,x&lt ;<2,x>>2) ;} As x = 5 = 0x0000,0101; so x << 2 -< 0x0001,0100 = 20; x >> 2 -> 0x0000,0001 = 1. Therefore, the answer is 5, 20, 1. 2007-02-26, 7462👍, 0💬

Using Pointers
What print out will the folloging code produce? main() { char *p1=“name”; char *p2; p2=(char*)malloc(20); memset (p2, 0, 20); while(*p2++ = *p1++); printf(“%s\n”,p2);> } The pointer p2 value is also increasing with p1 . *p2++ = *p1++ means copy value of *p1 to *p2 , then increment both addresses (p... 2007-02-26, 7125👍, 0💬

Incremental Operatos
What will be printed as the result of the operation below: main() { int x=20,y=35; x=y++ + x++; y= ++y + ++x; printf("%d%d\n",x,y); } Answer : 5794 2007-02-26, 6987👍, 0💬

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