String formatting (sprintf) in MATLAB - Mini Project: Build & Apply

String formatting (sprintf)

📖 Scenario: You are creating a simple program to format a message that shows a person's name and age in a nice sentence.

🎯 Goal: Build a MATLAB program that uses sprintf to create a formatted string showing a person's name and age.

📋 What You'll Learn

Create variables for name and age with exact values

Create a format string variable for sprintf

Use sprintf with the format string and variables

Print the formatted string

💡 Why This Matters

🌍 Real World

Formatting strings is useful when creating messages, reports, or logs that combine text and numbers clearly.

💼 Career

Many programming jobs require creating readable output or reports, and knowing how to format strings is a key skill.

1

Create variables for name and age

Create a variable called name and set it to 'Alice'. Create a variable called age and set it to 30.

MATLAB

% Your code here

Need a hint?

Use single quotes for strings in MATLAB, like 'Alice'.

2

Create a format string for sprintf

Create a variable called formatStr and set it to 'My name is %s and I am %d years old.'.

MATLAB

name = 'Alice';
age = 30;
% Your code here

Need a hint?

The format string uses %s for strings and %d for integers.

3

Use sprintf to create the formatted message

Create a variable called message and set it to the result of sprintf(formatStr, name, age).

MATLAB

name = 'Alice';
age = 30;
formatStr = 'My name is %s and I am %d years old.';
% Your code here

Need a hint?

Call sprintf with the format string and variables in order.

4

Print the formatted message

Use disp(message) to display the formatted message.

MATLAB

name = 'Alice';
age = 30;
formatStr = 'My name is %s and I am %d years old.';
message = sprintf(formatStr, name, age);
% Your code here

Need a hint?

Use disp to print the string stored in message.