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What will print out?
main() { char *p1=“name”; char *p2; p2=(char*)malloc(20); memset (p2, 0, 20); while(*p2++ = *p1++); printf(“%s\n”,p2);
}
Answer:empty string.
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
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);
}
Answer: 5,20,1
What will be printed as the result of the operation below:
#define swap(a,b) a=a+b;b=a-b;a=a-b;
void main(){ int x=5, y=10; swap (x,y); printf(“%d %d\n”,x,y); swap2(x,y); printf(“%d %d\n”,x,y); }
int swap2(int a, int b) { int temp; temp=a; b=a; a=temp; return 0;
}
Answer: 10, 510, 5
What will be printed as the result of the operation below:
main(){ char *ptr = ” Cisco Systems”; *ptr++; printf(“%s\n”,ptr); ptr++; printf(“%s\n”,ptr);
}
Answer:Cisco Systemsisco systems
What will be printed as the result of the operation below:
main(){ char s1[]=“Cisco”; char s2[]= “systems”; printf(“%s”,s1); }
Answer: Cisco
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
The following variable is available in file1.c, who can access it?:9. static int average;
Answer: all the functions in the file1.c can access the variable.
WHat will be the result of the following code?
#define TRUE 0 // some code
while(TRUE) {
// some code
}
Answer: This will not go into the loop as TRUE is defined as 0.
What will be printed as the result of the operation below:
int x; int modifyvalue() { return(x+=10); }
int changevalue(int x) { return(x+=1); }
void main(){ int x=10; x++; changevalue(x); x++; modifyvalue(); printf("First output:%d\n",x);
x++; changevalue(x); printf("Second output:%d\n",x); modifyvalue(); printf("Third output:%d\n",x);
}
Answer: 12 , 13 , 13
What will be printed as the result of the operation below:
main(){ int x=10, y=15; x = x++; y = ++y; printf(“%d %d\n”,x,y);
}
Answer: 11, 16
What will be printed as the result of the operation below:
main(){ int a=0; if(a==0) printf(“Cisco Systems\n”); printf(“Cisco Systems\n”);
}
Answer: Two lines with “Cisco Systems” will be printed.
main() { char *p1=“name”; char *p2; p2=(char*)malloc(20); memset (p2, 0, 20); while(*p2++ = *p1++); printf(“%s\n”,p2);
}
Answer:empty string.
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
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);
}
Answer: 5,20,1
What will be printed as the result of the operation below:
#define swap(a,b) a=a+b;b=a-b;a=a-b;
void main(){ int x=5, y=10; swap (x,y); printf(“%d %d\n”,x,y); swap2(x,y); printf(“%d %d\n”,x,y); }
int swap2(int a, int b) { int temp; temp=a; b=a; a=temp; return 0;
}
Answer: 10, 510, 5
What will be printed as the result of the operation below:
main(){ char *ptr = ” Cisco Systems”; *ptr++; printf(“%s\n”,ptr); ptr++; printf(“%s\n”,ptr);
}
Answer:Cisco Systemsisco systems
What will be printed as the result of the operation below:
main(){ char s1[]=“Cisco”; char s2[]= “systems”; printf(“%s”,s1); }
Answer: Cisco
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
The following variable is available in file1.c, who can access it?:9. static int average;
Answer: all the functions in the file1.c can access the variable.
WHat will be the result of the following code?
#define TRUE 0 // some code
while(TRUE) {
// some code
}
Answer: This will not go into the loop as TRUE is defined as 0.
What will be printed as the result of the operation below:
int x; int modifyvalue() { return(x+=10); }
int changevalue(int x) { return(x+=1); }
void main(){ int x=10; x++; changevalue(x); x++; modifyvalue(); printf("First output:%d\n",x);
x++; changevalue(x); printf("Second output:%d\n",x); modifyvalue(); printf("Third output:%d\n",x);
}
Answer: 12 , 13 , 13
What will be printed as the result of the operation below:
main(){ int x=10, y=15; x = x++; y = ++y; printf(“%d %d\n”,x,y);
}
Answer: 11, 16
What will be printed as the result of the operation below:
main(){ int a=0; if(a==0) printf(“Cisco Systems\n”); printf(“Cisco Systems\n”);
}
Answer: Two lines with “Cisco Systems” will be printed.
