User Input in Hindi Coding + Mini Project

Asking a question

pucho(sawal) ("ask") shows the question and gives back the next line of input as text. On this site, input comes from the Input box under the editor: each line of that box answers one pucho, in order. When the lines run out, pucho returns khali, so your program can notice there is nothing more to read.

lesson-12.altf

rakho naam = pucho("Aapka naam?");
bol("Namaste,", naam);

Input (one line per pucho)

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Expected output

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? Aapka naam?Namaste, Arjun

Answers are text — convert them

Whatever the user types arrives as text, even if it looks like a number. Before doing maths, wrap it in sankhya(). Forgetting this is the most common input bug: "10" + 5 would print 105.

lesson-12.altf

rakho a = sankhya(pucho("Pehla number?"));
rakho b = sankhya(pucho("Doosra number?"));
bol(a, "+", b, "=", a + b);

Input (one line per pucho)

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Expected output

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? Pehla number?? Doosra number?10 + 5 = 15

Reading until the input ends

Because pucho returns khali when there is nothing left, a jab_tak loop can read any number of lines. Check for khali before using the value.

lesson-12.altf

rakho list = [];
rakho line = pucho();
jab_tak (line != khali) {
  jodo(list, line);
  line = pucho();
}
bol("Aapne", lambai(list), "cheezein likhi:", milao(list, ", "));

Input (one line per pucho)

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Expected output

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Aapne 3 cheezein likhi: aam, kela, seb

Mini project: report card

Time to combine variables, conditions, loops, functions, lists and input. The program below reads a student's name and marks, then prints the total, the percentage and a grade. Change the input box and run it again — then try adding a "highest subject" line on your own.

lesson-12.altf

karya grade(pct) {
  agar (pct >= 90) { lautao "A+"; }
  warna agar (pct >= 75) { lautao "A"; }
  warna agar (pct >= 60) { lautao "B"; }
  warna agar (pct >= 33) { lautao "C"; }
  lautao "Fail";
}

rakho naam = pucho("Student ka naam?");
rakho marks = [];
rakho line = pucho("Marks?");
jab_tak (line != khali) {
  jodo(marks, sankhya(line));
  line = pucho("Marks?");
}

rakho total = kul(marks);
rakho pct = ganit.round(total / lambai(marks));
bol("Report card:", naam);
bol("Total:", total, "/", lambai(marks) * 100);
bol("Percentage:", pct);
bol("Grade:", grade(pct));

Input (one line per pucho)

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Expected output

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? Student ka naam?? Marks?? Marks?? Marks?? Marks?Report card: PriyaTotal: 247 / 300Percentage: 82Grade: A

Practice exercise

Read two lines of input — a name and an age — and print <name> agle saal <age + 1> ka hoga. With the input below the output is Dev agle saal 25 ka hoga.

Expected output

Dev agle saal 25 ka hoga

Test input (fed to pucho)

Dev
24

your-answer.altf

rakho naam = pucho("Naam?");
// umar pucho, sankhya mein badlo, phir bol karo

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Show solution

solution.altf

rakho naam = pucho("Naam?");
rakho umar = sankhya(pucho("Umar?"));
bol(naam, "agle saal", umar + 1, "ka hoga");