C Language Interview Questions

C Language String Questions

Qus:- how to enter the string and print them.

Ans:- gets(str);

Qus:- how to enter the name and age and print them in full manner.
Ans:-    gets(str);

Qus:- how to enter the string and print them with for loop.
Ans:-    ("%c",str[i]);

Qus:- how to find the string length.
Ans:-    l=strlen(str);

Qus:- how to enter the string and print them in upper case.
Ans:-    ("%c",str[i]-32);

Qus:- how to convert integer to character. from 65 to 122 in c langugae?
Ans:-    printf(“# ** %c = %d ** #”, i, i);

Qus:- write a program for lower case to upper case and upper case to lower case.
Ans:-    if(str[i]>65 && str[i]<91) {printf(“%c”,str[i]+32);}
else {printf(“%c”,str[i]-32);}

Qus:- how to count the vovels and consonants in given string and print.
Ans:- for(i=0;i<l;i++) { printf("%c",str[i]);
if(str[i]=='a' || str[i]=='e' || str[i]=='i' || str[i]='o' || str[i]=='u')
{v=v+i;} //count vovel  else
{c=c+i;} //count consonants
}
Qus:- how to copy one string to another?
Ans:- scrcpy(str2, str1);