33 lines
706 B
C
33 lines
706 B
C
#include <stdio.h>
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#include <ctype.h>
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int main() {
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char input_char;
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int line_count = 0;
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while (1) {
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int read_result = scanf("%c", &input_char);
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if (read_result == EOF) {
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break;
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}
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if (islower(input_char)) {
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printf("%c", toupper(input_char));
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} else if (isupper(input_char)) {
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printf("%c", tolower(input_char));
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} else if (input_char == '\n') {
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line_count++;
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printf("%c", input_char);
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} else if (isprint(input_char)) {
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// Print visible characters as they are
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printf("%c", input_char);
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}
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}
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printf("%d\n", line_count);
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return 0;
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}
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