Command Line Arguments problems
- 1. What will be the output of the program
#include<stdio.h> void fun(int); int main(int argc) { printf("%d ", argc); fun(argc); return 0; } void fun(int i) { if(i!=4) main(++i); }
Options- A. 1 2 3
- B. 1 2 3 4
- C. 2 3 4
- D. 1 Discuss
Correct Answer: 1 2 3 4
- 2. What will be the output of the program (myprog.c) given below if it is executed from the command line?
cmd> myprog friday tuesday sunday/* myprog.c */ #include<stdio.h> int main(int argc, char *argv[]) { printf("%c", *++argv[1]); return 0; }
Options- A. r
- B. f
- C. m
- D. y Discuss
Correct Answer: r
- 3. What will be the output of the program (myprog.c) given below if it is executed from the command line?
cmd> myprog one two three/* myprog.c */ #include<stdio.h> int main(int argc, char **argv) { printf("%c\n", **++argv); return 0; }
Options- A. myprog one two three
- B. myprog one
- C. o
- D. two Discuss
Correct Answer: o
- 4. What will be the output of the program (sample.c) given below if it is executed from the command line (Turbo C in DOS)?
cmd> sample 1 2 3/* sample.c */ #include<stdio.h> int main(int argc, char *argv[]) { int j; j = argv[1] + argv[2] + argv[3]; printf("%d", j); return 0; }
Options- A. 6
- B. sample 6
- C. Error
- D. Garbage value Discuss
Correct Answer: Error
Explanation:
Here argv[1], argv[2] and argv[3] are string type. We have to convert the string to integer type before perform arithmetic operation.
Example: j = atoi(argv[1]) + atoi(argv[2]) + atoi(argv[3]);
- 5. What will be the output of the program (sample.c) given below if it is executed from the command line?
cmd> sample 1 2 3
cmd> sample 2 2 3
cmd> sample 3 2 3/* sample.c */ #include<stdio.h> int main(int argc, char *argv[]) { printf("%s\n", argv[0]); return 0; }
Options- A. sample 3 2 3
- B. sample 1 2 3
- C. sample
- D. Error Discuss
Correct Answer: sample
- 6. What will be the output of the program (sample.c) given below if it is executed from the command line?
cmd> sample friday tuesday sunday/* sample.c */ #include<stdio.h> int main(int argc, char *argv[]) { printf("%c", *++argv[2] ); return 0; }
Options- A. s
- B. f
- C. u
- D. r Discuss
Correct Answer: u
- 7. What will be the output of the program (myprog.c) given below if it is executed from the command line?
cmd> myprog one two three/* myprog.c */ #include<stdio.h> #include<stdlib.h> int main(int argc, char **argv) { int i; for(i=1; i<=3; i++) printf("%u\n", &argv[i]); return 0; }If the first value printed by the above program is 65517, what will be the rest of output?
Options- A. 65525 65531
- B. 65519 65521
- C. 65517 65517
- D. 65521 65525 Discuss
Correct Answer: 65519 65521
- 8. What will be the output of the program (sample.c) given below if it is executed from the command line?
cmd> sample monday tuesday wednesday thursday/* sample.c */ #include<stdio.h> int main(int argc, char *argv[]) { while(--argc>0) printf("%s", *++argv); return 0; }
Options- A. sample monday tuesday wednesday thursday
- B. monday tuesday wednesday thursday
- C. monday tuesday thursday
- D. tuesday Discuss
Correct Answer: monday tuesday wednesday thursday
- 9. What will be the output of the program (myprog.c) given below if it is executed from the command line?
cmd> myprog 10 20 30/* myprog.c */ #include<stdio.h> int main(int argc, char **argv) { int i; for(i=0; i<argc; i++) printf("%s\n", argv[i]); return 0; }
Options- A. 10 20 30
- B. myprog 10 20
- C. myprog 10 20 30
- D. 10 20 Discuss
Correct Answer: myprog 10 20 30
- 10. What will be the output of the program (sample.c) given below if it is executed from the command line (turbo c under DOS)?
cmd> sample Good Morning/* sample.c */ #include<stdio.h> int main(int argc, char *argv[]) { printf("%d %s", argc, argv[1]); return 0; }
Options- A. 3 Good
- B. 2 Good
- C. Good Morning
- D. 3 Morning Discuss
Correct Answer: 3 Good
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