int main() {

Compile error: /storage/emulated/0/Android/data/com.cjkj.clanide/files/CJ_IDE/CProject/CIDEExample/src/Main.c: In function 'main':
/storage/emulated/0/Android/data/com.cjkj.clanide/files/CJ_IDE/CProject/CIDEExample/src/Main.c:5:4: error: expected '=', ',', ';', 'asm' or 'attribute' before 'for'
for (n=7;n<=100;n++)
^~~
/storage/emulated/0/Android/data/com.cjkj.clanide/files/CJ_IDE/CProject/CIDEExample/src/Main.c:5:9: error: 'n' undeclared (first use in this function)
for (n=7;n<=100;n++)
^
/storage/emulated/0/Android/data/com.cjkj.clanide/files/CJ_IDE/CProject/CIDEExample/src/Main.c:5:9: note: each undeclared identifier is reported only once for each function it appears in
/storage/emulated/0/Android/data/com.cjkj.clanide/files/CJ_IDE/CProject/CIDEExample/src/Main.c:7:11: error: stray '\357' in program
if(n % 7 !=0)
^
/storage/emulated/0/Android/data/com.cjkj.clanide/files/CJ_IDE/CProject/CIDEExample/src/Main.c:7:12: error: stray '\274' in program
if(n % 7 !=0)
^
/storage/emulated/0/Android/data/com.cjkj.clanide/files/CJ_IDE/CProject/CIDEExample/src/Main.c:7:13: error: stray '\205' in program
if(n % 7 !=0)
^
/storage/emulated/0/Android/data/com.cjkj.clanide/files/CJ_IDE/CProject/CIDEExample/src/Main.c:7:10: error: expected ')' before numeric constant
if(n % 7 !=0)
~ ^ ~
)

贴代码出来。看样子你写了全角字符了,仔细检查一下标点符号吧。应该是%符号你写成全角字符了

%%自己看看