We should not read after a write to a file without an intervening call to fflush(), fseek() or rewind()

We should not read after a write to a file without an intervening call

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1.	We should not read after a write to a file without an intervening call to fflush(), fseek() or rewind()
A.	1
B.
Answer» B.

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What will be the output of the program ?_x000D_ #include_x000D_ _x000D_ int main()_x000D_ {_x000D_ FILE *fp;_x000D_ unsigned char ch;_x000D_ /* file 'abc.c' contains "This is IndiaBIX " */_x000D_ fp=fopen("abc.c", "r");_x000D_ if(fp == NULL)_x000D_ {_x000D_ printf("Unable to open file");_x000D_ exit(1);_x000D_ }_x000D_ while((ch=getc(fp)) != EOF)_x000D_ printf("%c", ch);_x000D_ _x000D_ fclose(fp);_x000D_ printf("\n", ch);_x000D_ return 0;_x000D_ }
Which of the following statement is correct about the program?_x000D_ #include_x000D_ _x000D_ int main()_x000D_ {_x000D_ FILE *fp;_x000D_ char str[11], ch;_x000D_ int i=0;_x000D_ fp = fopen("INPUT.TXT", "r");_x000D_ while((ch=getc(fp))!=EOF)_x000D_ {_x000D_ if(ch == '\n' || ch == ' ')_x000D_ {_x000D_ str[i]='\0';_x000D_ strrev(str);_x000D_ printf("%s", str);_x000D_ i=0;_x000D_ }_x000D_ else_x000D_ str[i++]=ch;_x000D_ }_x000D_ fclose(fp);_x000D_ return 0;_x000D_ }
Which of the following statement is correct about the program?_x000D_ #include_x000D_ _x000D_ int main()_x000D_ {_x000D_ FILE *fp;_x000D_ char ch;_x000D_ int i=1;_x000D_ fp = fopen("myfile.c", "r");_x000D_ while((ch=getc(fp))!=EOF)_x000D_ {_x000D_ if(ch == '\n')_x000D_ i++;_x000D_ }_x000D_ fclose(fp);_x000D_ return 0;_x000D_ }
Point out the correct statements about the program?_x000D_ #include_x000D_ _x000D_ int main()_x000D_ {_x000D_ FILE *fptr;_x000D_ char str[80];_x000D_ fptr = fopen("f1.dat", "w");_x000D_ if(fptr == NULL)_x000D_ printf("Cannot open file");_x000D_ else_x000D_ {_x000D_ while(strlen(gets(str))>0)_x000D_ {_x000D_ fputs(str, fptr);_x000D_ fputs("\n", fptr);_x000D_ }_x000D_ fclose(fptr);_x000D_ }_x000D_ return 0;_x000D_ }
Point out the error in the program?_x000D_ #include_x000D_ _x000D_ int main()_x000D_ {_x000D_ char ch;_x000D_ int i;_x000D_ scanf("%c", &i);_x000D_ scanf("%d", &ch);_x000D_ printf("%c %d", ch, i);_x000D_ return 0;_x000D_ }
What will be the output of the program ?_x000D_ #include_x000D_ _x000D_ int main()_x000D_ {_x000D_ int k=1;_x000D_ printf("%d == 1 is" "%s\n", k, k==1?"TRUE":"FALSE");_x000D_ return 0;_x000D_ }
Point out the error in the program?_x000D_ #include_x000D_ #include_x000D_ _x000D_ int main()_x000D_ {_x000D_ unsigned char;_x000D_ FILE *fp;_x000D_ fp=fopen("trial", "r");_x000D_ if(!fp)_x000D_ {_x000D_ printf("Unable to open file");_x000D_ exit(1);_x000D_ }_x000D_ fclose(fp);_x000D_ return 0;_x000D_ }
What will be the output of the program ?_x000D_ #include_x000D_ _x000D_ int main()_x000D_ {_x000D_ float a=3.15529;_x000D_ printf("%2.1f\n", a);_x000D_ return 0;_x000D_ }
What does fp point to in the program ?_x000D_ #include_x000D_ _x000D_ int main()_x000D_ {_x000D_ FILE *fp;_x000D_ fp=fopen("trial", "r");_x000D_ return 0;_x000D_ }
What will be the output of the program ?_x000D_ #include_x000D_ _x000D_ int main()_x000D_ {_x000D_ int a=250;_x000D_ printf("%1d \n", a);_x000D_ return 0;_x000D_ }

We should not read after a write to a file without an intervening call to fflush(), fseek() or rewind()

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