pvjc24/cv1/program.c

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C
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#include <stdio.h>
int main() {
char ch;
int line_count = 0;
while ((ch = getchar()) != EOF) {
if (ch == '\n') {
line_count++;
} else {
putchar((ch >= 'a' && ch <= 'z') ? (ch - 32) : ((ch >= 'A' && ch <= 'Z') ? (ch + 32) : (ch >= 32 && ch <= 126 ? ch : '\0')));
}
}
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putchar("\n")
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return 0;
}