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Problem Solving Through Programming In C NPTEL Assignment Answers Week 7
Q1. Which of the following statement/s are false?
I. Array elements are stored in memory in contiguous locations.
II. An integer array always terminates with ‘\0’ (NULL).
a. I
b. II
c. Both I and II
d. None
Answer: b. II
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Q2. If two strings are identical, then strcmp() function returns
a. 1
b. 0
c. -1
d. None of these
Answer: b. 0
Q3. Which of the following function is more appropriate for reading in a multi word string?
a. scanf()
b. gets()
c. printf()
d. puts()
Answer: b. gets()
Q4. What will be printed after execution of the following code?
#include<stdio.h>
int main(){
int a[20]= {10, 20, 30, 40,50,60};
printf("%d", 3[a]);
return 0;
}Answer: 40
Q5. What will be the output of the program?
#include<stdio.h>
int main()
{
char str[] = "Array\0String";
printf("%s", str);
return 0;
}a. Array
b. Array String
c. Array\0String
d. Compilation error
Answer: a. Array
Q6. What will be the output?
#include<stdio.h>
#include<string.h>
int main()
{
char str1[20]= "Programming", str2[20]= "Language";
printf("%s", strcpy(str2, strcat(str1, str2)));
return 0;
}a. Programming
b. Language
c. ProgrammingLanguage
d. LanguageProgramming
Answer: c. ProgrammingLanguage
Q7. What will be the output?
#include <stdio.h>
int main()
{
char str1[] = "I-LOVE-C";
char str2[] = {'T','-', 'L', 'O', 'V', 'E', '-', 'C'};
int n1 = sizeof(str1)/sizeof(str1[0]);
int n2 = sizeof(str2)/sizeof(str2[0]);
printf("nl=%d, n2=%d", nl, n2);
return 0;
}a. n1= 8, n2=8
b. n1=9, n2=9
c. n1=8, n2=9
d. n1=9, n2=8
Answer: d. n1=9, n2=8
Q8. What will be the output?
#include <stdio.h>
int main()
{
int i, m=1, num[6] = {1,2,3,4,5,6};
for(i=0; i<=5; i++)
m=m*num[i];
printf("%d", m);
return 0;
}Answer: 720
Q9. What will be the output?
#include<stdio.h>
#include<string.h>
int main()
{
char p[] = "assignment";
char t;
int i, j;
for(i=0, j=strlen(p); i<j; i++)
{
t = p[i];
p[i] = p[j-i];
P[j-i]=t;
}
printf("%s", p);
return 0;
}a. assignment
b. tnemngissa
c. nothing will be printed
d. tttttttttt
Answer: c. nothing will be printed
Q10. What will be the output?
#include<stdio.h>
#include<string.h>
int main(){
char p[]="welcome", q[]="welcome";
if(p==q)
{
printf("Two strings are equal");
}
return 0;
}a. Two strings are equal
b. Two strings are not equal
c. Would not print anything
d. Compilation error
Answer: c. Would not print anything
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