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C Variables

Declare typed values.

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The concept

C variables have explicit types. int stores an integer, while double stores a floating point value. printf writes formatted output.

#include <stdio.h>
int main(void) {
  int score = 91;
  printf("%d\n", score);
  return 0;
}

Output

Example details

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1#include <stdio.h>

2int main(void) {

3 int score = 91;

4 printf("%d\n", score);

5 return 0;

6}

Start to inspect the source, values, and output. These prepared steps explain the published sample; grouped loop steps describe multiple iterations.

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Prepared trace of the published program. Some rows group repeated iterations.
What happens	State after step	Output so far
Allocate an int named score and initialize it to 91.	`score = 91`	—
%d formats the integer; \n ends the line.	`score = 91`	91
Return zero to signal successful completion.	`score = 91`	91

How C processes this code

The C compiler produces a native program. Variables occupy memory, and execution enters main.