What is Control Flow
When you write a C program, you are giving the computer a set of instructions to follow. By default, these instructions are executed one after another, from the top of the file to the bottom.
main.c
123456789#include <stdio.h> int main() { // Declare and initialize variable // Prompt user's input // Output user's input return 0; }
This straightforward order is called sequential execution. However, most real-world programs need to make decisions, such as checking if a user has entered the correct password or if a number is positive or negative.
main.c
1234567891011121314#include <stdio.h> int main() { // Declare and initialize variable // Prompt user's input // Is user's input incorrect? // Yes → Output error // else // No → Output user's input return 0; }
This is where the concept of control flow comes in—control flow lets you change the path your program takes depending on certain conditions and creating branches in your program.
Using control flow, you can tell your program to skip instructions, repeat them, or choose between different sets of instructions based on what is happening while the program runs.
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When you write a C program, you are giving the computer a set of instructions to follow. By default, these instructions are executed one after another, from the top of the file to the bottom.
main.c
123456789#include <stdio.h> int main() { // Declare and initialize variable // Prompt user's input // Output user's input return 0; }
This straightforward order is called sequential execution. However, most real-world programs need to make decisions, such as checking if a user has entered the correct password or if a number is positive or negative.
main.c
1234567891011121314#include <stdio.h> int main() { // Declare and initialize variable // Prompt user's input // Is user's input incorrect? // Yes → Output error // else // No → Output user's input return 0; }
This is where the concept of control flow comes in—control flow lets you change the path your program takes depending on certain conditions and creating branches in your program.
Using control flow, you can tell your program to skip instructions, repeat them, or choose between different sets of instructions based on what is happening while the program runs.
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