Online C Compiler

C example code

Loop over an integer array.

#include <stdio.h>

int main(void) {
  int values[] = {3, 5, 8, 13};
  int total = 0;
  int count = sizeof(values) / sizeof(values[0]);

  for (int i = 0; i < count; i++) {
    total += values[i];
  }

  printf("Values: ");
  for (int i = 0; i < count; i++) {
    printf("%d%s", values[i], i == count - 1 ? "\n" : ", ");
  }
  printf("Total: %d\n", total);
  return 0;
}

Sample output

Values: 3, 5, 8, 13
Total: 29

Common C errors

• Missing header: Include headers such as stdio.h before using printf or scanf.
• Segmentation fault: Check array bounds and pointer usage.
• Format mismatch: Match printf and scanf specifiers to the variable type.