| char | %c |
| short int | %hi,%ho,%hx |
| unsigned short int | %hi,%ho,%hx |
| int | %i,%o,%x |
| unsigned int | %u,%o,%x |
| long int | %li,%lo,%lx |
| unsigned long int | %lu,%lo,%lx |
| long long int | %lli,%llo,%llx |
| unsigned long long int | %llu,%llo,%llx |
| float | %f,%e,%g,%a |
| double | %f,%e,%g,%a |
| long double | %lf,%le,%lg |
| id(pointer) | %p |
| NSObject object | %@ |
| string | %s |
| output character count | %n |
| output characters | %[] |
| accuracy | %% |
原文：http://www.cnblogs.com/nxz-diy/p/5331655.html