| 1. | Which of the following function sets first n characters of a string to a given character? |
| a. | strinit() |
| b. | strnset() |
| c. | strset() |
| d. | strcset() |
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Answer: (b).strnset()
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| 2. | If the two strings are identical, then strcmp() function returns |
| a. | -1 |
| b. | 1 |
| c. | 0 |
| d. | Yes |
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Answer: (c).0
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| 3. | How will you print \n on the screen? |
| a. | printf("\n"); |
| b. | echo "\\n"; |
| c. | printf('\n'); |
| d. | printf("\\n"); |
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Answer: (d).printf("\\n");
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| 4. | The library function used to find the last occurrence of a character in a string is |
| a. | strnstr() |
| b. | laststr() |
| c. | strrchr() |
| d. | strstr() |
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Answer: (c).strrchr()
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| 5. | Which of the following function is used to find the first occurrence of a given string in another string? |
| a. | strchr() |
| b. | strrchr() |
| c. | strstr() |
| d. | strnset() |
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Answer: (c).strstr()
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| 6. | Which of the following function is more appropriate for reading in a multi-word string? |
| a. | printf(); |
| b. | scanf(); |
| c. | gets(); |
| d. | puts(); |
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Answer: (c).gets();
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| 7. | Strcat function adds null character |
| a. | Only if there is space |
| b. | Always |
| c. | Depends on the standard |
| d. | Depends on the compiler |
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Answer: (b).Always
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| 8. | The return-type used in String operations are |
| a. | void only |
| b. | void and (char *) only |
| c. | void and int only |
| d. | void, int and (char *) only |
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Answer: (d).void, int and (char *) only
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| 9. | String operation such as strcat(s, t), strcmp(s, t), strcpy(s, t) and strlen(s) heavily rely upon. |
| a. | Presence of NULL character |
| b. | Presence of new-line character |
| c. | Presence of any escape sequence |
| d. | None of the mentioned |
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Answer: (a).Presence of NULL character
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| 10. | Which pre-defined function returns a pointer to the last occurence of a character in a string? |
| a. | strchr(s, c); |
| b. | strrchr(s, c); |
| c. | strlchr(s, c); |
| d. | strfchr(s, c); |
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Answer: (b).strrchr(s, c);
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