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zcc - Frontend for the z88dk Cross-C Compiler - v12228-3adc863-20180704
- 症状
for文でbreakを使うと挙動がおかしくなる。
test.c
/*
z88dk / WebMSX
zcc +msx -lndos -create-app -bntest test.c
*/
# include <stdio.h>
void main()
{
for (int i = 0; i < 10; i++) {
if (i >= 5) break;
printf("%d\n", i);
}
}
- 回避策
変数宣言をfor文の外に出す。
test.c
/*
z88dk / WebMSX
zcc +msx -lndos -create-app -bntest test.c
*/
# include <stdio.h>
void main()
{
int i;
for (i = 0; i < 10; i++) {
if (i >= 5) break;
printf("%d\n", i);
}
}
- 症状
floatの比較がおかしい。
- 回避策
条件をいろいろ変えてみる。
test.c
/*
z88dk / WebMSX
zcc +msx -lndos -lm -create-app -bntest test.c
PC6001V / cload, run
zcc +pc6001 -lm -create-app -subtype=32k -bntest test.c
*/
# include <stdio.h>
void main()
{
float f = 0;
if (4 < f) {
printf("true\n");
} else {
printf("false\n");
}
if (f > 4) {
printf("true\n");
} else {
printf("false\n");
}
}
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