NPTEL Problem Solving Through Programming In C Week 7 Assignment Answers
Q1. Which of the following statements are correct?
i. A string is a collection of characters terminated by 10′.
ii. The format specifier %s is used to print a string.
iii. The length of the string can be obtained by strlen().
iv. The pointer cannot work on string
a. i, ii
b. i, ii, iii
c. ii, iv
d. i, iii
Answer: b. i, ii, iii
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Q2. The right method of initializing a 2D array is
a. int abc[2][2] = {1, 2, 3, 4}
b. int abc[][] = {1,2,3,4}
c. int abc[2][] = {1,2,3,4}
d. all of the above
Answer: a. int abc[2][2] = {1, 2, 3,4}
Q3. The array passed as an argument to a function is interpreted as
a. Address of all the elements in an array
b. Value of the first element of the array
c. Address of the first element of the array
d. Number of elements of the array
Answer: c. Address of the first element of the array
Q4. What will be the output?
#include<stdio.h>
int main()
{
int disp[3][4]={{5,
6,8,2},{4,5,3,7}, {1,10,13,15}};
printf("%d\n",disp[2][3]); return 0;
}Answer: 15
Q5. What will be the output?
#include <stdio.h>
int main()
{char str1[]="Live and let live";char str2[]={'L', 'ï', 'v', 'e', ' ', 'a', 'n', 'd', ' ', 'l', 'e', 't',' ','l', 'i', 'v', 'e'};
int n1=sizeof(str1)/sizeof(str1[0]);
int n2=sizeof(str2)/sizeof(str2[0]);
printf("n1=%d, n2=%d",nl,n2);
return 0;
}a. n1=18, n2=17
b. n1=18, n2=18
c. n1=17, n1=17
d) n1=17, n2=18
Answer: a. n1=18, n2=17
Q6. What will be the value of ‘i’ after the execution of the C code fragment given below?
static char str1[]="dills";
static char str2[20];
static char str3[]="daffo";
int i;
i=strcmp(strcat(str3, strcpy(str2,str1)),"daffodills");Answer: 0
Q7. Consider the following C program segment:
#include<stdio.h>
#include<string.h>
int main()
{
char p[20];
char s[]="string";
int length=strlen(s);
int i;
for(i=0;i<length;i++)
p[i]=s[length-i];
printf("%s",p);
return 0;}The output would be:
a. gnirts
b. gnirt
c. string
d. no output is printed
Answer: d. no output is printed
Q8. What will be the output?
#include<stdio.h>
void swap(char*str1,char*str2)
{
char*temp=strl;
str1=str2;
str2 =temp;
}
int main()
{
char*str1="Swayam";
char*str2="2022";
swap(str1,str2);
printf("str1 is %s, str2 is %s",str1,str2);
return 0;
}a. str1 is Swayam, str2 is 2022
b. str1 is 2022, str2 is Swayam
c. str1 is Swayam, str2 is Swayam
d. str1 is 2022, str2 is 2022
Answer: a. str1 is Swayam, str2 is 2022
Q9. What would you put in place of “****” to print “Two”?
#include<stdio.h>
int main()
{
char arr[]="TwentyTwo";
printf("%s",****);
return 0;
}a. arr
b. arr+5
c. arr+6
d. Not possible
Answer: c. arr+6
Q10. If the starting address of an float array Arr[10][10] is 2000, what would be the memory address of the element Arr[5][6]? (float takes 4 bytes of memory)
a. 2268
b. 2120
c. 2224
d. 2144
Answer: c. 2224
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